Battery wrapping film, battery, and electronic device

Abstract

This application belongs to the field of electronic technology and discloses a battery wrapping film, a battery, and an electronic device. The above-mentioned battery wrapping film includes: a film body and a heat dissipation material; the film body includes: a first plastic layer and a second plastic layer; the first plastic layer and the second plastic layer are stacked, and a receiving cavity is formed between the first plastic layer and the second plastic layer; the projection of the receiving cavity along the normal direction of the film body is in a net shape; the heat dissipation material is arranged in the receiving cavity.

Description

Technical Field

[0001] This application belongs to the field of electronic technology, and particularly relates to a battery wrapping film, a battery, and an electronic device. Background Art

[0002] With the integration of the functions of electronic devices, the heat dissipation requirements for electronic devices are getting higher and higher. As the main heat-generating component on an electronic device, if the heat generated during the operation of the battery cannot be conducted in time, it will cause each component in the electronic device to operate in a high-temperature environment for a long time, which is extremely likely to cause damage to the electronic device.

[0003] In existing electronic devices, there is a battery compartment. After the battery is wrapped with a battery wrapping film, it is installed in the battery compartment. In practical applications, it is found that the heat generated during the operation of the battery can only be horizontally conducted to the main board area through a heat sink, and the existing battery wrapping film is only used to wrap the battery for physical protection of the battery. The battery wrapping film itself does not have a heat dissipation function. This setting method is difficult to conduct the heat generated during the operation of the battery, resulting in the limitation of the heat dissipation performance of the electronic device. Summary of the Invention

[0004] This application aims to provide a battery wrapping film, a battery, and an electronic device to solve the problem that the existing battery wrapping film is difficult to conduct the heat generated during the operation of the battery.

[0005] To solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, an embodiment of this application provides a battery wrapping film, including: a film body and a heat dissipation material; the film body includes: a first plastic layer and a second plastic layer; the first plastic layer and the second plastic layer are stacked, and a receiving cavity is formed between the first plastic layer and the second plastic layer;

[0007] The projection of the receiving cavity along the normal direction of the film body is in a net shape; the heat dissipation material is arranged in the receiving cavity.

[0008] According to the battery wrapping film provided by the embodiment of this application, the film body further includes: an adhesive;

[0009] The adhesive is clamped between the first plastic layer and the second plastic layer; the adhesive spaces out the receiving cavity between the first plastic layer and the second plastic layer.

[0010] According to the battery wrapping film provided by the embodiment of this application, there are multiple adhesives, and at least part of the multiple adhesives are arranged in an array, and the receiving cavity is formed between the multiple adhesives.

[0011] A battery wrapping film according to an embodiment of the present application, wherein the first plastic layer includes a concave portion and a convex portion;

[0012] The concave portion and the convex portion are connected; along the normal direction of the film body, a height difference is formed between the convex portion and the concave portion, the projection area of the concave portion overlaps with the projection area of the bonding member, and the projection area of the convex portion overlaps with the projection area of the accommodation cavity.

[0013] A battery wrapping film according to an embodiment of the present application, the battery wrapping film further comprising: a dotting member;

[0014] The dotting member is disposed on a side surface of the concave portion facing away from the second plastic layer, and the dotting member is used for bonding with the battery cell.

[0015] A battery wrapping film according to an embodiment of the present application, along the normal direction of the film body, the height of the dotting member relative to the second plastic layer is greater than the height of the convex portion relative to the second plastic layer.

[0016] A battery wrapping film according to an embodiment of the present application, at least one of the first plastic layer and the second plastic layer includes a PET plastic film.

[0017] A battery wrapping film according to an embodiment of the present application, the film body includes a supporting portion and a clamping portion;

[0018] The clamping portion is arranged along the circumferential direction of the supporting portion, and an accommodation space is formed between the clamping portion and the supporting portion, and the accommodation space is used for accommodating the battery cell, and the accommodation cavity is arranged in the supporting portion.

[0019] A battery wrapping film according to an embodiment of the present application, the heat dissipation material includes at least one of thermal gel, thermal silicone and graphite.

[0020] In a second aspect, an embodiment of the present application further provides a battery, the battery comprising: a battery cell and the battery wrapping film as described above; the battery wrapping film is wrapped on the surface of the battery cell.

[0021] In a third aspect, an embodiment of the present application further provides an electronic device, the electronic device including the battery as described above.

[0022] In an embodiment of the present application, by configuring the film body of the battery wrapping film as a first plastic layer and a second plastic layer, and constructing a net-shaped accommodating cavity between the first plastic layer and the second plastic layer, it can be ensured that the first plastic layer and the second plastic layer are well compounded together. And by arranging a heat dissipation material in the net-shaped accommodating cavity, the heat dissipation material can form a net-shaped heat dissipation structure with a three-dimensional shape, which can utilize the structural characteristics and heat dissipation characteristics of the heat dissipation material to conduct heat along both the extension direction and the thickness direction of the film body without changing the original structure of the film body, preventing heat from accumulating in the film body, thereby improving the heat dissipation effect on the battery.

[0023] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, where:

[0025] Figure 1 is a schematic structural diagram of a battery wrapping film according to an embodiment of the present application;

[0026] Figure 2 is a schematic assembly structure diagram of a battery wrapping film and an electric core according to an embodiment of the present application;

[0027] Figure 3 is one of the schematic structural diagrams of a supporting portion of a battery wrapping film according to an embodiment of the present application;

[0028] Figure 4 is according to an embodiment of the present application Figure 3 explosion structure diagram;

[0029] Figure 5 is the other schematic structural diagram of a supporting portion of a battery wrapping film according to an embodiment of the present application;

[0030] Figure 6 is along according to an embodiment of the present application Figure 5 cross-sectional view taken along line A-A in;

[0031] Figure 7 is along according to an embodiment of the present application Figure 5 cross-sectional view taken along line B-B in;

[0032] Figure 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

[0033] Reference Signs:

[0034] 1. Battery wrapping film; 11. Film body; 12. Heat dissipation material; 13. Glue dispensing part; 101. Accommodating space; 1101. Receiving cavity; 111. First plastic layer; 112. Bonding part; 113. Second plastic layer; 1111. Concave part; 1112. Convex part; 1121. Supporting part; 1122. Clamping part;

[0035] 2. Middle frame; 21. First area; 22. Second area;

[0036] 3. Battery cell; 4. Heat pipe; 5. Heat sink; 6. Circuit board; 61. Components. Detailed implementation manners

[0037] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present application and should not be construed as a limitation of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

[0038] The terms "first" and "second" in the description and claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0039] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present application.

[0040] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0041] The following will combine Figures 1-8 , and through specific embodiments and their application scenarios, the battery wrapping film, battery, and electronic device provided by the embodiments of the present application will be described in detail.

[0042] In the first aspect, as Figures 1 to 3 shown, an embodiment of the present application proposes a battery wrapping film. The battery wrapping film 1 includes a film body 11 and a heat dissipation material 12; the film body 11 includes: a first plastic layer 111 and a second plastic layer 113; the first plastic layer 111 and the second plastic layer 113 are stacked, and a receiving cavity 1101 is formed between the first plastic layer 111 and the second plastic layer 113.

[0043] The projection of the receiving cavity 1101 along the normal direction of the film body 11 is in a net shape; the heat dissipation material 12 is arranged in the receiving cavity 1101.

[0044] It can be understood that the first plastic layer 111 and the second plastic layer 113 can respectively be selected as thermoplastic polyester films. By stacking the first plastic layer 111 and the second plastic layer 113, a film body 11 made of a plastic material with strong ductility can be formed.

[0045] Optionally, at least one of the first plastic layer 111 and the second plastic layer 113 includes a PET plastic film. The PET plastic film is specifically a polyester resin (Polyethylene terephthalate, PET) film.

[0046] In practical applications, by setting a spacer between the first plastic layer 111 and the second plastic layer 113, or by setting the surface structure of the opposite surfaces of the first plastic layer 111 and the second plastic layer 113, the receiving cavity 1101 can be constructed between the first plastic layer 111 and the second plastic layer 113.

[0047] As Figure 1 and Figure 2 shown, the film body 11 encloses a receiving space 101 for accommodating the battery cell 3. Among them, the receiving space 101 can be a semi-closed space. For example, an installation opening communicating with the receiving space 101 is formed on one side of the film body 11. Since the film body 11 has the characteristic of being deformable, the installation opening of the film body 11 can be enlarged by an external force first, and then the battery cell 3 can be embedded into the receiving space 101 through the installation opening.

[0048] As Figures 1 to 3 shown, the normal direction of the film body 11 is along the thickness direction of the film body 11; more specifically, the normal direction of the film body 11 is perpendicular to the side surface of the second plastic layer 113 facing away from the first plastic layer 111.

[0049] Since the heat dissipation material 12 is filled in the accommodation cavity 1101, the thermal conductivity of the entire battery wrapping film 1 is improved under the action of the heat dissipation material 12. Further, since the accommodation cavity 1101 is constructed in a net shape and formed between the first plastic layer 111 and the second plastic layer 113, each part of the accommodation cavity 1101 is mutually conductive along the extension direction of the film body 11. Based on the heat conduction of the heat dissipation material 12 in the accommodation cavity 1101, heat can be conducted inside the film body 11 along the extension direction of the film body 11.

[0050] Meanwhile, since the heat dissipation material 12 forms a three-dimensional net-shaped heat dissipation structure under the limitation of the accommodation cavity 1101, after the battery cell 3 is installed in the above-mentioned accommodation space 101, under the action of the heat dissipation material 12, the heat generated by the operation of the battery cell 3 can not only be conducted along the surface of the battery cell 3, but also be conducted along the thickness direction of the film body 11 to vertically dissipate heat from the battery cell 3.

[0051] Among them, the heat dissipation material 12 can be a shaped heat dissipation material. Optionally, the heat dissipation material 12 is a metal heat dissipation material or a graphite heat dissipation material. In this case, the shape of the heat dissipation material 12 is adapted to the shape of the accommodation cavity 1101.

[0052] Of course, the heat dissipation material 12 can also be a deformable heat dissipation material. Optionally, the heat dissipation material 12 is a paste-like heat dissipation material or a liquid heat dissipation material. In this case, the heat dissipation material 12 is filled in the accommodation cavity 1101 and can adaptively deform as the shape of the accommodation cavity 1101 changes.

[0053] Optionally, the paste-like heat dissipation material can be at least one of thermal conductive gel and thermal conductive silica gel.

[0054] Optionally, the liquid heat dissipation material can be a liquid metal heat conduction agent.

[0055] Of course, the heat dissipation material 12 in this embodiment can also be a mixture composed of a shaped heat dissipation material and a deformable heat dissipation material, which is not limited herein.

[0056] In the embodiments of the present application, by configuring the film body 11 of the battery wrapping film 1 as a first plastic layer 111 and a second plastic layer 113, a net-shaped accommodation cavity 1101 is constructed between the first plastic layer 111 and the second plastic layer 113, which can ensure that the first plastic layer 111 and the second plastic layer 113 are well compounded together. And by arranging a heat dissipation material 12 in the net-shaped accommodation cavity 1101, the heat dissipation material 12 can form a three-dimensional net-shaped heat dissipation structure, which can, on the basis of not changing the original structure of the film body 11, utilize the structural characteristics and heat dissipation characteristics of the heat dissipation material 12 to realize the conduction of heat along both the extension direction and the thickness direction of the film body 11, prevent heat from accumulating in the film body 11, and thus improve the heat dissipation effect on the battery.

[0057] In some embodiments, as Figure 3 shown, the film body 11 of the embodiments of the present application further includes: an adhesive member 112.

[0058] The adhesive member 112 is clamped between the first plastic layer 111 and the second plastic layer 113, and the adhesive member 112 spaces out the accommodation cavity 1101 between the first plastic layer 111 and the second plastic layer 113.

[0059] Specifically, the adhesive member 112 can be a double-sided adhesive, and the adhesive member 112 is used to bond the first plastic layer 111 and the second plastic layer 113 into one body.

[0060] Since the first plastic layer 111 and the second plastic layer 113 are arranged in a laminated manner, a gap space can be constructed between the first plastic layer 111 and the second plastic layer 113. In practical applications, in this embodiment, the shape or arrangement state of the adhesive member 112 can be set according to the arrangement form of the accommodation cavity 1101, so as to space the above gap space into a net-shaped accommodation cavity 1101 through the adhesive member 112.

[0061] In some embodiments, as Figure 4 、 Figure 6 and Figure 7 shown, there are multiple adhesive members 112 in the embodiments of the present application, and at least some of the multiple adhesive members 112 are arranged in an array; the accommodation cavity 1101 is net-shaped and is formed between the multiple adhesive members 112.

[0062] Specifically, since the multiple adhesive members 112 are arranged in an array between the first plastic layer 111 and the second plastic layer 113, an interconnected gap space is formed between the multiple adhesive members 112, and these interconnected gap spaces form the accommodation cavity 1101 of this embodiment.

[0063] Thus, based on the array arrangement of multiple bonding members 112, the accommodation cavity 1101 can be in a net shape. Then, under the limitation of the accommodation cavity 1101, the heat dissipation material 12 in the accommodation cavity 1101 is formed into a three-dimensional net-shaped heat dissipation structure.

[0064] Optionally, the heat dissipation material 12 includes multiple first heat dissipation members and multiple second heat dissipation members. The multiple first heat dissipation members and the multiple second heat dissipation members are sandwiched between the first plastic layer 111 and the second plastic layer 113 at the same layer. The multiple first heat dissipation members are arranged along a first direction, the multiple second heat dissipation members are arranged along a second direction, and each first heat dissipation member and each second heat dissipation member are cross-connected to each other.

[0065] Wherein, the first direction and the second direction are arranged at an included angle. For example, the first direction and the second direction are perpendicularly arranged.

[0066] It should be noted here that in the case where the heat dissipation material 12 is a shaped heat dissipation material, the accommodation cavity 1101 is in a semi-closed state, and part of the heat dissipation material 12 can be exposed to the air.

[0067] In the case where the heat dissipation material 12 is a deformable heat dissipation material, the accommodation cavity 1101 is in a closed state, and the heat dissipation material 12 is disposed in the accommodation cavity 1101.

[0068] In some embodiments, as Figures 5 to 7 shown, the first plastic layer 111 of the embodiment of the present application includes a concave portion 1111 and a convex portion 1112. Among them, a stamping or pre-pressing process can be used to form the concave portion 1111 and the convex portion 1112 on the first plastic layer 111.

[0069] The concave portion 1111 and the convex portion 1112 are connected; along the normal direction of the film body 11, a height difference is formed between the convex portion 1112 and the concave portion 1111. The projection area of the concave portion 1111 overlaps with the projection area of the bonding member 112, and the projection area of the convex portion 1112 overlaps with the projection area of the accommodation cavity 1101.

[0070] Specifically, the concave portion 1111 is concave toward the side close to the second plastic layer 113, and the convex portion 1112 is convex toward the side away from the second plastic layer 113, which makes the concave portion 1111 and the convex portion 1112 distributed on different planes.

[0071] In practical applications, by arranging the concave portion 1111 and the bonding member 112 opposite to each other, and arranging the convex portion 1112 and the accommodating cavity 1101 opposite to each other, while connecting the first plastic layer 111 and the second plastic layer 113 through the bonding member 112, it is ensured that a relatively large-volume accommodating cavity 1101 is formed between the first plastic layer 111 and the second plastic layer 113, so as to arrange as much heat dissipation material 12 as possible in the accommodating cavity 1101, thereby increasing the heat conduction effect of the battery wrapping film 1.

[0072] Meanwhile, when there are multiple bonding members 112 and the multiple bonding members 112 are arranged in an array, the first plastic layer 111 is provided with multiple concave portions 1111 and multiple convex portions 1112, the multiple concave portions 1111 are arranged in an array, and the accommodating cavities 1101 corresponding to the multiple convex portions 1112 communicate with each other.

[0073] This setting method not only ensures reliable connection between the first plastic layer 111 and the second plastic layer 113 through the multiple bonding members 112, but also forms a net-like accommodating cavity 1101 between the first plastic layer 111 and the second plastic layer 113 based on the arrangement of the multiple bonding members 112.

[0074] In this way, since the various partial regions of the accommodating cavity 1101 communicate with each other, the heat generated by the operation of the battery cell 3 can be conducted horizontally through the heat dissipation material 12 in the accommodating cavity 1101. At the same time, since the heat dissipation material 12 is distributed in a net-like manner in the accommodating cavity 1101, it is beneficial to the heat dissipation performance of the heat dissipation material 12 in three-dimensional space, and the heat generated by the operation of the battery cell 3 is conducted along the thickness direction of the film body 11.

[0075] Furthermore, as shown in Figure 3 and Figure 6 the battery wrapping film 1 of the embodiment of the present application further includes a dispensing member 13; the dispensing member 13 is provided on the side surface of the concave portion 1111 facing away from the second plastic layer 113, and the dispensing member 13 is used for bonding with the battery cell 3.

[0076] Specifically, in this embodiment, by bonding the dispensing member 13 with the battery cell 3, while fixing the battery cell 3 in the battery wrapping film 1, it is convenient to disassemble and repair the battery cell 3.

[0077] Meanwhile, since the dispensing member 13 is arranged in the concave portion 1111 of the first plastic layer 111, the arrangement of the dispensing member 13 does not occupy the thickness space of the film body 11.

[0078] In some embodiments, as shown in Figure 6 and Figure 7 along the normal direction (thickness direction) of the film body 11, the height of the dispensing member 13 relative to the second plastic layer 113 is greater than the height of the convex portion 1112 relative to the second plastic layer 113.

[0079] Thus, in practical applications, along the thickness direction of the film body 11, the dispensing member 13 is at the highest position on the side of the first plastic layer 111 facing away from the second plastic layer 113. This setting method can ensure that only the dispensing member 13 is in effective contact with the battery cell 3, and other positions on the film body 11 are not in contact with the battery cell 3, making it convenient to disassemble the battery cell 3 while the dispensing member 13 bonds the battery cell 3.

[0080] Based on the solution of the above embodiment, as Figure 1 shown, the film body 11 of the embodiment of the present application includes a supporting portion 1121 and a clamping portion 1122. The clamping portion 1122 is arranged along the circumferential direction of the supporting portion 1121, and an accommodating space 101 is formed between the clamping portion 1122 and the supporting portion 1121 for accommodating the battery cell 3; a receiving cavity 1101 is arranged in the supporting portion 1121.

[0081] Specifically, the supporting portion 1121 is in a plate shape and is adapted to support the surface of the battery cell 3. The supporting portion 1121 includes the first plastic layer 111, the bonding member 112, and the second plastic layer 113 of the above embodiment; the bonding member 112 is sandwiched between the first plastic layer 111 and the second plastic layer 113, and the bonding member 112 spaces out a net-shaped receiving cavity 1101 between the first plastic layer 111 and the second plastic layer 113, and the heat dissipation material 12 is arranged in the receiving cavity 1101.

[0082] At the same time, the clamping portion 1122 can be a sheet-shaped clamping ear. There are multiple clamping portions 1122, and a first part of the multiple clamping portions 1122 is arranged on the first side of the supporting portion 1121, and a second part of the multiple clamping portions 1122 is arranged on the second side of the supporting portion 1121. The first side and the second side of the supporting portion 1121 are arranged opposite to each other, and the first part and the second part of the multiple clamping portions 1122 are arranged opposite to each other and at intervals.

[0083] In a second aspect, as Figure 2 shown, the embodiment of the present application provides a battery, which includes: a battery cell 3 and the battery wrapping film 1 as described above; the battery wrapping film 1 wraps around the surface of the battery cell 3.

[0084] Specifically, since the battery of this embodiment includes the battery wrapping film 1, and the specific structure of the battery wrapping film 1 refers to the above embodiment, the battery shown in this embodiment includes all the technical solutions of the above embodiment. Therefore, it has at least all the beneficial effects obtained by all the technical solutions of the above embodiment, which will not be elaborated here one by one.

[0085] In a third aspect, as Figure 8 shown, the embodiment of the present application provides an electronic device, which includes the battery shown in the above embodiment.

[0086] In the embodiments of the present application, the above-mentioned electronic device may be a mobile terminal, such as: a smart phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a mobile internet device (MID), or a wearable device, etc. It may also be other electronic devices, such as a digital camera, an e-book, a navigator, etc.

[0087] As Figure 8 shown, the electronic device further includes: a middle frame 2; the middle frame 2 has a first area 21, a battery compartment is formed in the first area 21, and a battery is disposed in the battery compartment. Among them, the battery compartment is in a groove-like structure with an open upper side, and one side of the battery wrapping film 1 facing away from the battery cell 3 is adhesively bonded to the bottom surface of the battery compartment through a double-sided adhesive.

[0088] At the same time, the electronic device further includes a heat sink 4 and a circuit board 6. At least a part of the heat sink 4 is clamped between the battery wrapping film 1 and the first area 21 of the middle frame 2; the middle frame 2 further has a second area 22, the circuit board 6 is disposed in the second area 22, and the heat sink 4 and the circuit board 6 are connected.

[0089] Specifically, at least a part of the heat sink 4 can extend to the second area 22 and is clamped between the circuit board 6 and the middle frame 2. In this way, the heat generated during the operation of the battery cell 3 can be vertically conducted to the heat sink 4 through the battery wrapping film 1, and then, conducted horizontally to the circuit board 6 by the heat sink 4.

[0090] This setting method improves the vertical heat transfer effect between the battery cell 3 and the heat sink 4, so that the heat in the electronic device is evenly distributed as much as possible in the first area 21 where the battery cell 3 is located and the second area 22 where the circuit board 6 is located.

[0091] As Figure 8 shown, the electronic device further includes a heat sink 5 and a circuit board 6. The heat sink 5 is disposed on the side of the battery cell 3 facing away from the battery wrapping film 1, and the heat sink 5 is connected to the battery cell 3; the middle frame 2 further has a second area 22, the circuit board 6 is disposed in the second area 22, and the heat sink 5 and the circuit board 6 are connected.

[0092] The heat sink 5 can be a graphite heat sink, at least a part of the heat sink 5 can extend to the second area 22 and is connected to the components 61 on the side of the circuit board 6 facing away from the middle frame 2. Among them, the components 61 can be a CPU and semiconductor power devices.

[0093] In this way, the heat generated during the operation of the battery cell 3 can first be conducted to one end of the heat sink 5, and the heat is horizontally conducted through the heat sink 5 to the component 61 on the circuit board 6. This setting also enables the heat in the electronic device to be evenly distributed in the above-mentioned first region 21 and second region 22 as much as possible, which is beneficial to improving the heat dissipation efficiency of the electronic device, enhancing the charging performance and usage experience of the electronic device.

[0094] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0095] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery wrapping film, characterized in that, Comprising: A film body and a heat dissipation material; The film body includes: a first plastic layer and a second plastic layer; the first plastic layer and the second plastic layer are laminated, and an accommodation cavity is formed between the first plastic layer and the second plastic layer; The projection of the accommodation cavity along the normal direction of the film body is reticular; the heat dissipation material is disposed in the accommodation cavity, and the heat dissipation material is formed into a three-dimensional reticular heat dissipation structure under the limitation of the accommodation cavity, so as to realize heat conduction along both the extension direction and the thickness direction of the film body; The heat dissipation material is a deformable heat dissipation material, the accommodation cavity is in a closed shape, and the heat dissipation material can deform as the shape of the accommodation cavity changes; The first plastic layer includes a plurality of concave portions and a plurality of convex portions; the plurality of convex portions are connected, one concave portion is connected to at least two convex portions, and the extension directions of the at least two convex portions intersect; along the normal direction of the film body, a height difference is formed between the convex portion and the concave portion, and the projection area of the convex portion overlaps with the projection area of the accommodation cavity; The battery wrapping film further includes: a dotting member; the dotting member is disposed on a side surface of the concave portion facing away from the second plastic layer, and the dotting member is used for bonding with the battery cell; along the normal direction of the film body, the height of the dotting member relative to the second plastic layer is greater than the height of the convex portion relative to the second plastic layer.

2. The battery wrapping film according to claim 1, characterized in that, The film body further includes: an adhesive member; The adhesive member is clamped between the first plastic layer and the second plastic layer; the adhesive member spaces out the accommodation cavity between the first plastic layer and the second plastic layer, and the projection area of the concave portion overlaps with the projection area of the adhesive member.

3. The battery wrapping film according to claim 2, characterized in that, There are a plurality of the adhesive members, and at least part of the plurality of adhesive members are arranged in an array, and the accommodation cavity is formed between the plurality of adhesive members.

4. The battery wrapping film according to any one of claims 1 to 3, characterized in that, At least one of the first plastic layer and the second plastic layer includes a PET plastic film.

5. The battery wrapping film according to any one of claims 1 to 3, characterized in that The film body includes a supporting portion and a clamping portion; The clamping portion is arranged along the circumference of the supporting portion, and an accommodating space is formed between the clamping portion and the supporting portion for accommodating the battery cell, and the accommodation cavity is arranged in the supporting portion.

6. The battery wrapping film according to any one of claims 1 to 3, characterized in that, The heat dissipation material includes at least one of thermal gel and thermal silica gel.

7. A battery, characterized in that, Comprising: A battery cell and the battery wrapping film according to any one of claims 1 to 6; the battery wrapping film wraps the surface of the battery cell.

8. An electronic device, characterized in that, The electronic device includes the battery according to claim 7.

Images