CN216529052U - Battery cover heat dissipation film - Google Patents

Abstract

The application relates to the technical field of batteries, in particular to a battery cover heat dissipation film. The battery cover radiating film sequentially comprises a protective film layer, a first nano-copper layer, a graphite sheet layer, a second nano-copper layer and a conductive cloth layer from the outer surface to the inner surface, wherein the conductive cloth layer is used for being bonded with an external battery cover, and the thickness ratio of the protective film layer to the first nano-copper layer to the graphite sheet layer to the second nano-copper layer to the conductive cloth layer is (1-2) to (2-3) to (1-2). This application is through pressing building-up the type with protection rete, first nanometer copper layer, graphite lamella and second nanometer copper layer and conducting cloth for battery cover radiating film has excellent mechanics and heat dispersion, and the protection rete makes the difficult quilt of surface of battery cover radiating film scrape the flower, and simultaneously can dampproofing, waterproof and dustproof, first nanometer copper layer and second nanometer copper layer wrap up the graphite lamella, can prevent effectively that the battery from falling the phenomenon of powder at the graphite layer in the use.

Description

Battery cover heat dissipation film

Technical Field

The application relates to the technical field of batteries, in particular to a battery cover heat dissipation film.

Background

Along with the rapid development of the society, people have more and more demands on electronic products, and batteries are used as energy storage equipment of the electronic products, so that the batteries play a great role in using the electronic products. Generally, batteries are sealed inside electronic products, and when the batteries work, a large amount of heat is generated, the heat is easily accumulated in a sealed space, the temperature of parts inside the electronic products is too high due to long-time excessive heating of the batteries, normal use of parts is affected, meanwhile, the aging process of the products is accelerated due to the long-time excessive heating of the batteries, and the service life of the electronic products is shortened. Therefore, the heat dissipation problem of the battery is a problem which is always overcome in the field of the battery at present.

The structure of the battery in the electronic product mainly comprises a battery body, a battery cover and a battery cover, wherein the surface of the battery cover is provided with a wiring hole and a power supply hole which are used for being connected with external equipment, the heat dissipation of the battery can be realized by connecting a battery cover heat dissipation film on the battery cover, so that the heat generated by the battery is transferred through the battery cover heat dissipation film, thereby reducing the temperature inside the battery, the battery cover heat dissipation film mainly adopts a graphite sheet as a main heat conductor, the graphite sheet is generally designed into regular shapes such as square, round, triangular and the like, although the design can well transfer the heat inside the battery, after the heat is transferred to the graphite sheet, the heat on the graphite sheet can not be quickly transferred to the air, thereby reducing the heat dissipation efficiency, and simultaneously, because the graphite sheet is thin and easy to fall off powder, after a long time, the heat dissipation capacity is weakened, and the temperature of the battery can be increased in the use process, thereby shortening the service life of the battery.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the application provides a battery cover heat dissipation film.

The application provides a battery cover heat dissipation film adopts following technical scheme:

a battery cover heat dissipation film comprises a protection film layer, a first nano copper layer, a graphite sheet layer, a second nano copper layer and a conductive cloth layer in sequence from the outer surface to the inner surface, wherein the conductive cloth layer is used for being bonded with an external battery cover, and the thickness ratio of the protection film layer to the first nano copper layer to the graphite sheet layer to the second nano copper layer to the conductive cloth layer is (1-2) to (2-3) to (1-2).

Through adopting above-mentioned technical scheme, make battery cover heat dissipation film have excellent mechanics and heat dispersion, the protection film makes the surface of battery cover heat dissipation film be difficult for being scraped the flower, but simultaneously dampproofing, waterproof and dustproof, reduce the possibility that battery cover heat dissipation film is oxidized, first nanometer copper layer and second nanometer copper layer wrap up the graphite lamella, can prevent effectively that the battery from falling the phenomenon of powder at the graphite layer in the use, still can strengthen the intensity of graphite layer simultaneously, make the graphite lamella be difficult for the rupture, first nanometer copper layer and second nanometer copper layer have better intensity, can strengthen the intensity of battery cover heat dissipation film, first nanometer copper layer, the second nanometer copper layer is different with the coefficient of heat conductivity of graphite lamella, can form the difference in temperature simultaneously, thermal transmission.

Optionally, the first nano-copper layer is provided with a first exhaust groove, the protective film layer is provided with a second exhaust groove, and the side wall of the first exhaust groove is abutted to the side wall of the second exhaust groove.

By adopting the technical scheme, the heat dissipation area of the first nanometer carbon copper layer is increased, the heat dissipation speed of the battery cover heat dissipation film is further increased, the heat dissipation performance of the battery cover heat dissipation film is improved, air flows along the air exhaust groove of the protection film layer, the contact area of the protection film layer and the air is increased, and heat dissipation is accelerated.

Optionally, the first exhaust groove is formed by sequentially connecting a plurality of first ventilation grooves, and the cross section of each first ventilation groove is in a V shape; the second air exhaust groove is formed by sequentially connecting a plurality of second ventilation grooves, the cross section of each second ventilation groove is V-shaped, and the side wall of each first ventilation groove is abutted against the side wall of each second ventilation groove.

By adopting the technical scheme, the contact area of the battery cover heat dissipation film and air is increased, and the heat dissipation capacity of the battery cover heat dissipation film is improved.

Optionally, this battery cover heat dissipation film is including the first region and the second region that set up side by side in proper order, the second region includes first locating piece, second locating piece and third locating piece, the second locating piece with first region is connected, the second locating piece with relative both sides limit portion that first region is connected with first locating piece and third locating piece respectively, the third locating piece with enclose between the first region and establish the space of stepping down that is used for the circulation of air, first region, first locating piece, second locating piece and third locating piece are including protection rete, first nanometer carbon copper layer, graphite lamella and second nanometer carbon copper layer and conducting cloth layer by surface to internal surface in proper order.

By adopting the technical scheme, the air passes through the yielding space formed by the third positioning block and the first area in a surrounding manner, and meanwhile, the air also passes through two sides of the first positioning block, the air circularly flows, so that the heat generated by the heat transfer battery on the battery cover heat dissipation film can be transferred to the battery cover heat dissipation film, the battery cover heat dissipation film can quickly dissipate heat, the heat dissipation capacity of the battery cover heat dissipation film is improved, and the high-temperature effect of the battery is effectively reduced. Simultaneously first locating piece and third locating piece play the effect of guide to heat transfer, heat transfer to the battery cover radiating film when the battery, because between third locating piece and the first region, there is the circulation of air in the both sides of first locating piece, make the temperature of first locating piece and third locating piece lateral wall slightly be less than the temperature at battery cover radiating film middle part, the heat will be followed middle part transmission to first locating piece and third locating piece, thereby accelerate thermal transmission, make the radiating efficiency improve, reduce the harm of high temperature to electronic product, thereby prolong electronic product's life.

Optionally, one side of the second positioning block is provided with a first notch for avoiding a line arranging hole of the battery cover.

The battery cover is provided with a wire arranging hole used for being connected with external equipment, and the first notch formed in the second positioning block can be used for facilitating the connection of the external equipment and the wire arranging hole.

Optionally, one side of the third positioning block is provided with a second notch for avoiding a power supply hole of the battery cover.

The battery cover is provided with a power supply hole used for being connected with external equipment, one side of the third positioning block, which is far away from the first area, is provided with a second notch used for abdicating, and the external equipment can be conveniently connected with the power supply hole.

Optionally, the battery cover heat dissipation film further comprises a dustproof film, and the dustproof film layer is connected with the conductive cloth layer.

Through adopting above-mentioned technical scheme, make the conducting cloth layer isolated with pollutants such as air, dust and water, make the conducting cloth layer keep good viscidity, the dust mask has good waterproof nature, can effectual reduction conducting cloth layer and air and water contact.

Optionally, one side of the dustproof film extends to be provided with a hand tear tape.

Through adopting above-mentioned technical scheme, conveniently tearing the dust mask, for effectual reduction conducting cloth layer and air and water contact, the dust mask bonds with the conducting cloth layer firmly, needs to separate dust mask and conducting cloth layer, is more difficult, to this, extends in one side of dust mask and is provided with the hand and tears the subsides, when needing to tear the dust mask, and handheld hand tears the subsides, just can be more easily with dust mask and the separation of conducting cloth layer.

In summary, the present application at least includes the following beneficial technical effects:

1. the battery cover heat dissipation film has excellent mechanical, electrical and chemical properties, the surface of the battery cover heat dissipation film is not prone to scratching due to the protection film layer, meanwhile, moisture, water and dust can be prevented, the possibility that the battery cover heat dissipation film is oxidized is reduced, the graphite sheet layer is wrapped by the first nano-carbon copper layer and the second nano-carbon copper layer, and the phenomenon that the graphite layer falls off powder in the use process of the battery can be effectively prevented;

2. this application encloses the space of stepping down of establishing the formation between third locating piece and the first region, and the air also wears through the both sides of first locating piece simultaneously, and the circulation of air flows, can be with the heat transfer to battery cover radiating film that the heat transfer battery on the battery cover radiating film produced, and the battery cover radiating film can dispel the heat fast, and in addition, the quick heat transfer at middle part can be guided to first locating piece and third locating piece, improves the heat-sinking capability of battery cover radiating film, the effectual high temperature effect that reduces the battery.

Drawings

Fig. 1 is a schematic diagram of a structure of a heat dissipation film layer of a battery cover according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the first nano-copper carbon layer.

Fig. 3 is a schematic structural view of the protective film layer.

Fig. 4 is a schematic surface structure of the dust-proof film.

Fig. 5 is a schematic view of the surface structure of the graphite sheet.

Description of reference numerals: 1. a first fixed block; 21. a first positioning block; 22. a second positioning block; 23. a third positioning block; 3. a first notch; 4. a second notch; 5. a protective film layer; 51. a second exhaust groove; 511. a second air-permeable groove; 6. a first nano-copper layer; 61. a first exhaust groove; 611. a first gas-permeable groove; 7. a graphite sheet layer; 8. a second nano copper layer; 9. a conductive cloth layer; 11. a dust-proof film; 111. tearing off the label by hand; 12. and (5) yielding space.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

In fig. 5 of the present application, the first region and the second region are divided by a dotted line.

The application embodiment discloses a battery cover heat dissipation film. Referring to fig. 1, the battery cover heat dissipation film sequentially comprises a protective film layer 5, a first nano copper layer 6, a graphite sheet layer 7, a second nano copper layer 8, a conductive cloth layer 9 and a dustproof film 11 from the outer surface to the inner surface, the thickness ratio of the protective film layer 5, the first nano copper layer 6, the graphite sheet layer 7, the second nano copper layer 8 and the conductive cloth layer 9 is 1:2:1:2:1, for example, the protective film layer 5 is 0.1mm thick, the first nano copper layer 6 is 0.2mm thick, the graphite sheet layer 7 is 0.1mm thick, the second nano copper layer 8 is 0.2mm thick, the conductive cloth layer 9 is 0.1mm thick, the graphite sheet layer 7 is placed between the first nano copper layer 6 and the second nano copper layer 8, the first nano copper layer 6, the graphite sheet layer 7 and the second nano copper layer 8 are integrally laminated, and the edges of the first nano copper layer 6 and the second nano copper layer 8 are laminated, and wrapping the graphite sheet layer 7, laminating the graphite sheet layer with the conductive cloth layer 9, bonding the protective film layer 5 with the first nano carbon copper layer 6 through a first glue layer, and bonding the conductive cloth layer 9 with the dustproof film 11 through a second glue layer.

Referring to fig. 2, a plurality of first air vent grooves 61 are concavely formed at intervals on the first nano carbon copper layer 6, the first air vent grooves 61 are formed by sequentially connecting a plurality of first air vent grooves 611, the cross sectional area of each first air vent groove 611 is in a V shape, referring to fig. 1, the side surfaces of the first air vent grooves 611 are rectangular, the distance from the groove bottom of each first air vent groove 611 to the groove opening is equal to half of the thickness of the first nano carbon copper layer 6, so that the heat dissipation area of the nano copper layer can be further increased, referring to fig. 3, a plurality of second air vent grooves 51 are concavely formed at intervals on the protective film layer 5, the side walls of the second air vent grooves 51 are abutted against the side walls of the first air vent grooves 61, each second air vent groove 51 is formed by sequentially connecting a plurality of second air vent grooves 511, the cross sectional area of each second air vent groove 511 is in a V shape, referring back to fig. 1, the side surfaces of the second air vent grooves 511 are rectangular, the groove bottoms of the second air vent grooves 511 are abutted against the groove bottoms of the first air vent grooves 611, can fully protect first nanometer copper layer 6, refer to fig. 4, and arbitrary one side extension of dust-proof membrane 11 is connected with hand and tears subsides 111.

Referring to fig. 5, battery cover heat dissipation membrane is including the first region and the second region that set up side by side in proper order, the first region includes first fixed block 1, the second region includes the second locating piece 22 of being connected with first fixed block 1, the relative both sides limit portion that second locating piece 22 and first fixed block 1 are connected with first locating piece 21 and third locating piece 23 respectively, first locating piece 21 and third locating piece 23 play the effect of guide to heat transfer, the air passes through the both sides of first locating piece 21, form the circulation flow of air, be convenient for dispel the heat fast, form the space of stepping down 12 between first fixed block 1 and the third locating piece 23 simultaneously, the air can flow in the space of stepping down 12, accelerate heat transfer. The first notch 3 is formed in one side edge portion, close to the first positioning block 21, of the second positioning block 22, the first notch 3 is located at one end, away from the first fixing block 1, of the second positioning block 22, the wire arranging hole of the battery cover is convenient to avoid, the first positioning block 21 is located at one end, close to the first notch 3, of the second positioning block 22, and the second notch 4 is formed in one side edge portion, away from the first fixing block 1, of the third positioning block 23 and used for avoiding the wire arranging hole of the battery cover.

The implementation principle of a battery cover heat dissipation film in the embodiment of the application is as follows: firstly, the first nano carbon copper layer 6, the graphite sheet layer 7 and the second nano carbon copper layer 8 are pressed, then the second nano carbon copper layer 8 is aligned to the conductive cloth layer 9 to be pressed, after the pressing, the second nano carbon copper layer 8 is coated with a first glue layer, the protective film layer 5 is bonded on the first glue layer, after the bonding is stable, the surface of the conductive cloth layer 9, far away from the second nano carbon copper layer 8, is coated with a second glue layer, and the dustproof film layer 11 is bonded with the surface of the second glue layer. When the battery is assembled, the hand-held tearing sticker 111 is held, the dustproof film 11 is torn, the conductive cloth layer 9 is aligned to the battery cover, and the conductive cloth layer 9 is adhered to the surface of the battery cover through the second glue layer, so that when the battery is used, the battery cover transmits heat to the battery cover heat dissipation film, and the battery cover heat dissipation film dissipates the heat.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. A battery cover heat dissipation film is characterized in that: the battery cover radiating film sequentially comprises a protective film layer (5), a first nano carbon copper layer (6), a graphite sheet layer (7), a second nano carbon copper layer (8) and a conductive cloth layer (9) from the outer surface to the inner surface, wherein the conductive cloth layer (9) is used for being bonded with an external battery cover, and the thickness ratio of the protective film layer (5), the first nano carbon copper layer (6), the graphite sheet layer (7), the second nano carbon copper layer (8) and the conductive cloth layer (9) is (1-2): 2-3): 1-2.

2. The battery cover heat dissipation film of claim 1, wherein: first nanometer carbon copper layer (6) are provided with first air discharge duct (61), protection rete (5) all are provided with the second air discharge duct, the lateral wall of first air discharge duct (61) with second air discharge duct (51) lateral wall butt.

3. The battery cover heat dissipation film of claim 2, wherein: the first exhaust groove (61) is formed by sequentially connecting a plurality of first ventilation grooves, and the cross sections of the first ventilation grooves are V-shaped; the second exhaust groove (51) is formed by sequentially connecting a plurality of second ventilation grooves (511), the cross section of each second ventilation groove (511) is V-shaped, and the side wall of each first ventilation groove (611) is abutted against the side wall of each second ventilation groove (511).

4. The battery cover heat dissipation film of claim 1, wherein: the battery cover heat dissipation film sequentially comprises a first area and a second area connected with the first area, the second area comprises a first positioning block (21), a second positioning block (22) and a third positioning block (23), the second positioning block (22) is connected with the first area, the two opposite side parts of the second positioning block (22) connected with the first area are respectively connected with a first positioning block (21) and a third positioning block (23), an abdicating space for air circulation is enclosed between the third positioning block (23) and the first area, the first region, the first locating block (21), the second locating block (22) and the third locating block (23) sequentially comprise a protective film layer (5), a first nano carbon copper layer (6), a graphite sheet layer (7), a second nano carbon copper layer (8) and a conductive cloth layer (9) from the outer surface to the inner surface.

5. The battery cover heat dissipation film of claim 4, wherein: one side of the second positioning block (22) is provided with a first notch (3) used for avoiding a line arranging hole of the battery cover.

6. The battery cover heat dissipation film of claim 4, wherein: and a second notch (4) for avoiding a power supply hole of the battery cover is formed in one side of the third positioning block (23).

7. The battery cover heat dissipation film of claim 6, wherein: the battery cover heat dissipation film further comprises a dustproof film (11), and the dustproof film (11) layer is connected with the conductive cloth layer (9).

8. The battery cover heat dissipation film of claim 7, wherein: at least one side edge part of the dustproof film (11) is provided with a hand tearing sticker (111).

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