Composite adhesive tape, battery and electronic equipment

Abstract

The utility model discloses composite adhesive paper, a battery and electronic equipment, and belongs to the technical field of batteries. The composite adhesive tape is used for coating a battery and comprises a functional layer assembly and a connecting layer assembly, the functional layer assembly is connected to the battery through the connecting layer assembly, and the functional layer assembly is used for blocking heat between the functional layer assembly and the battery and dissipating the heat between the functional layer assembly and the battery. The functional layer assembly is used for blocking heat generated by the battery between the functional layer assembly and the battery, when the battery emits heat, objects close to the battery or in certain contact with the battery can be radiated or transferred by the heat generated by the battery, so that heat is generated, and the battery can generate non-uniform heat; and the arrangement of the functional layer assembly prevents the heat from overflowing, and also can heat the part with higher local temperature between the functional layer assembly and the battery, so that the battery has the beneficial effects of preventing the heat of the battery from overflowing, balancing the heat of the battery and improving the user experience.

Description

Technical Field

[0001] The present application belongs to the field of battery technology, and specifically relates to a composite adhesive tape, a battery and an electronic device. Background Art

[0002] With the rapid development of the battery industry, the demand for high-energy batteries from electronic products has become an inevitable trend. Currently, most mobile phone products have a fast charging function, which improves charging efficiency by increasing the charging current.

[0003] However, as the current increases, the temperature of the PCB (Printed Circuit Board) and the power devices used for protection will increase significantly, and the heat is concentrated, the heat dissipation is poor, and the battery cell is prone to overheating during charging, which poses a risk of explosion. In addition, the temperature of the battery cell rises and is transmitted to the user when the user uses the mobile phone, resulting in a poor user experience. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a composite adhesive tape, a battery and an electronic device, which can solve the problem of local overheating of the battery cell and affect the user experience in the prior art.

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

[0006] In a first aspect, an embodiment of the present application provides a composite adhesive paper for wrapping a battery, comprising: a functional layer component and a connecting layer component, wherein the functional layer component is connected to the battery via the connecting layer component, and the functional layer component is used to block heat between the functional layer component and the battery, and dissipate heat between the functional layer component and the battery.

[0007] In an embodiment of the present application, the composite adhesive tape includes a functional layer component and a connecting layer component, and the connecting layer component is provided to connect the functional layer component to the battery. The functional layer component is provided to block the heat generated by the battery between the functional layer component and the battery. It is understandable that in practical applications, when the battery is heated, objects close to the battery or in certain contact with the battery will be radiated or transferred by the heat generated by the battery, thereby also generating heat, for example, an electronic device equipped with a battery. The provision of the functional layer component prevents the overflow of heat, and has the beneficial effect of preventing the overflow of battery heat and improving the user experience. Further, the functional layer component can also dissipate the heat between the functional layer component and the battery. It is understandable that in practical applications, the battery may have uneven heating, for example, the local battery temperature is higher than the average temperature of the battery, and the functional layer component can heat the heat of the local high temperature part to the functional layer component and the battery, thereby balancing the temperature of the battery surface. It is understandable that under the same heat, the larger the area of ​​heat dissipation, the lower the heat, and the provision of the functional layer component has the beneficial effect of reducing the battery temperature and uniform battery temperature. In addition, as the overall temperature of the battery decreases, the heat transferred to the electronic device is also reduced, which has the beneficial effect of improving the user experience.

[0008] In a second aspect, an embodiment of the present application provides a battery, including a battery cell, a battery protection plate and the composite adhesive paper as described above, wherein the battery protection plate and the battery cell are electrically connected, and the composite adhesive paper is coated on the periphery of the battery cell and the battery protection plate.

[0009] In an embodiment of the present application, the battery cell and the battery protection plate are electrically connected, and the composite adhesive tape is coated on the periphery of the battery cell and the battery protection plate. In practical applications, the battery protection plate is generally arranged at the head of the battery cell. Specifically, when the battery cell is charged, the degree of heat generated by the battery protection plate is generally higher than the degree of heat generated by the battery cell, resulting in uneven heat in various parts of the battery, which can easily lead to battery explosion. By coating the composite adhesive tape on the periphery of the battery cell and the battery protection plate, on the one hand, the heat generated by the battery protection plate and the battery cell can be isolated between the composite adhesive tape and the battery cell to prevent the heat from being conducted to components other than the battery. On the other hand, the heat generated by the battery protection plate and the battery cell can also be dissipated between the composite adhesive tape and the battery cell, alleviating the problem of high local heat in the battery. In an embodiment of the present application, by providing the composite adhesive tape and coating the composite adhesive tape on the periphery of the battery cell and the battery protection plate, it has the beneficial effect of preventing heat from being conducted outside the battery and improving the user experience, and also has the beneficial effect of dissipating the heat generated by the battery cell and the battery protection plate to alleviate the excessively high local temperature of the battery.

[0010] It should be noted that the composite adhesive tape provided in this embodiment is also applicable to other batteries with winding structure and stacking structure, such as soft-pack batteries, aluminum shell batteries, cylindrical batteries, etc., and this embodiment does not impose any limitation on this.

[0011] In a third aspect, an embodiment of the present application further provides an electronic device, comprising a battery as described above, wherein the battery and the electronic device are electrically connected, and the battery is used to power the electronic device.

[0012] In an embodiment of the present application, the battery is used to power an electronic device, and an electronic device is provided with a battery as described above. Since the battery includes a composite adhesive tape, in actual applications, when the battery generates heat, the setting of the functional layer component prevents the heat from overflowing. Furthermore, the functional layer component can also dissipate the heat between the functional layer component and the battery. It is understandable that in actual applications, the battery may generate uneven heat. For example, the local battery temperature is higher than the average temperature of the battery, and the functional layer component can transfer the heat of the local high temperature part to between the functional layer component and the battery, thereby balancing the temperature of the battery surface. On the one hand, the above-mentioned battery can isolate the heat generated by the battery protection plate and the battery cell between the composite adhesive tape and the battery cell to prevent the heat from being conducted to components other than the battery. On the other hand, the heat generated by the battery protection plate and the battery cell can also be dissipated between the composite adhesive tape and the battery cell, alleviating the problem of high local heat in the battery. In the embodiment of the present application, by providing a composite adhesive tape and wrapping the composite adhesive tape around the periphery of the battery cell and the battery protection plate, it has the beneficial effect of preventing heat from being conducted outside the battery, thereby improving the user experience. It also has the beneficial effect of dissipating the heat generated by the battery cell and the battery protection plate, thereby alleviating the local excessive temperature of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the composite adhesive tape in the embodiment of the present application.

[0014] Description of reference numerals:

[0015] 1. Functional layer components; 2. Connection layer components; 10. Protective layer; 11. Heat insulation layer; 12. Heat generating layer; 121. Circuit terminal; 13. Heat dissipation layer; 20. Connection layer. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0017] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0018] The composite adhesive tape and the battery provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0019] See also Figure 1 An embodiment of the present application provides a composite adhesive tape for wrapping a battery, comprising: a functional layer component 1 and a connecting layer component 2, wherein the functional layer component 1 and the connecting layer component 2 each comprise a plurality of structural layers, wherein the structural layers of the functional layer component 1 and the structural layers of the connecting layer component 2 are alternately stacked, and the functional layer component 1 is connected to the battery via the connecting layer component 2, and the functional layer component 1 is used to block heat between the functional layer component 1 and the battery, and dissipate heat between the functional layer component 1 and the battery.

[0020] In the embodiment of the present application, the composite adhesive tape includes a functional layer component 1 and a connecting layer component 2, and the connecting layer component 2 is configured to connect the functional layer component 1 to the battery. The functional layer component 1 is configured to block the heat generated by the battery between the functional layer component 1 and the battery. It is understandable that in practical applications, when the battery is heated, objects close to the battery or in certain contact with the battery will be radiated or transferred by the heat generated by the battery, thereby also generating heat, for example, an electronic device equipped with a battery. The configuration of the functional layer component 1 prevents the overflow of heat, and has the beneficial effect of preventing the overflow of battery heat and improving the user experience. Further, the functional layer component 1 can also dissipate the heat between the functional layer component 1 and the battery. It is understandable that in practical applications, the battery may have uneven heating, for example, the local battery temperature is higher than the average temperature of the battery, and the functional layer component 1 can transfer the heat of the local high temperature part to the functional layer component 1 and the battery, thereby balancing the temperature of the battery surface. It is understandable that under the same heat, the larger the area of ​​heat dissipation, the lower the heat, and the configuration of the functional layer component 1 has the beneficial effect of reducing the battery temperature and uniformizing the battery temperature. In addition, as the overall temperature of the battery decreases, the heat transferred to the electronic device is also reduced, which has the beneficial effect of improving the user experience.

[0021] Optionally, in an embodiment of the present application, the composite adhesive tape includes a first direction perpendicular to the maximum surface, and the structural layers of the functional layer assembly 1 include a protective layer 10, a thermal insulation layer 11, a heating layer 12 and a heat dissipation layer 13 which are stacked in sequence close to the battery along the first direction, the heating layer 12 is used to generate heat, the heat dissipation layer 13 is used to dissipate heat, and the thermal insulation layer 11 is used to block heat between the thermal insulation layer 11 and the battery.

[0022] In the embodiment of the present application, the protective layer 10, the heat insulation layer 11, the heating layer 12 and the heat dissipation layer 13 are stacked in sequence along the first direction, and the protective layer 10, the heat insulation layer 11, the heating layer 12 and the heat dissipation layer 13 are close to the battery in sequence. It can be understood that the heat dissipation layer 13 in the functional layer assembly 1 is closest to the battery, and the protective layer 10 in the functional layer assembly 1 is farthest from the battery. The heat dissipation layer 13 is set to dissipate heat. The heat dissipation layer 13 is set at a position close to the battery to dissipate the heat generated by the battery in the first time to prevent the battery from exploding due to local heating. The heat dissipation layer 13 includes a first surface and a second surface arranged relatively along the first direction. It can be understood that when the temperature of the position where one of the first surface and the second surface is close is higher than the temperature of the position where the other of the first surface and the second surface is close, the heat dissipates from the high temperature side to the low temperature side. In practical applications, when the battery is set close to the first surface and the temperature of the battery is higher than the temperature of the second surface, the heat generated by the battery will be dissipated to the second surface through the heat dissipation layer 13, which has the beneficial effect of cooling and equalizing the temperature of the battery.

[0023] Furthermore, the heating layer 12 is used to increase heat. In practical applications, when the battery is in a low temperature environment, in order to maintain the activity of the battery material and keep the battery working well, the heating layer 12 needs to provide a certain amount of heat for the battery. When the heating layer 12 generates heat, the heat generated by the heating layer 12 can be dissipated to a position close to the battery through the heat dissipation layer 13, providing heat for the battery, which has the beneficial effect of ensuring that the battery has good low temperature adaptability.

[0024] Furthermore, the thermal insulation layer 11 is arranged at a position away from the battery. The thermal insulation layer 11 is arranged to isolate heat, and a heat-generating layer 12 and a heat-dissipating layer 13 are sandwiched between the thermal insulation layer 11 and the battery. The heat generated by the heat-generating layer 12 or the battery is isolated between the battery and the thermal insulation layer 11 by the thermal insulation layer 11, which has the beneficial effect of preventing the heat of the thermal insulation layer 11 and the battery from being transferred to other components.

[0025] Optionally, in an embodiment of the present application, the structural layer of the connecting layer assembly 2 includes multiple connecting layers 20, the protective layer 10 and the thermal insulation layer 11 are connected by at least one connecting layer 20, the thermal insulation layer 11 and the heat generating layer 12 are connected by at least one connecting layer 20, the heat generating layer 12 and the heat dissipation layer 13 are connected by at least one connecting layer 20, and the heat dissipation layer 13 and the battery are connected by at least one connecting layer 20.

[0026] In the embodiment of the present application, the connection layer 20 is provided to realize the connection between the layers in the functional layer assembly 1. Among them, the protective layer 10 and the heat insulation layer 11 are connected by at least one connection layer 20, the heat insulation layer 11 and the heating layer 12 are connected by at least one connection layer 20, the heating layer 12 and the heat dissipation layer 13 are connected by at least one connection layer 20, and the heat dissipation layer 13 and the battery are connected by at least one connection layer 20. The connection layer 20 is provided to avoid the beneficial effect of damage to various functions caused by relative displacement between the protective layer 10, the heat insulation layer 11, the heating layer 12 and the heat dissipation layer 13.

[0027] It should be noted that the connection layer 20 can be disposed between the layers in the functional layer assembly 1 by applying or pasting, and the arrangement between the layers can be the same or different, and this embodiment does not impose any limitation on this.

[0028] It should also be noted that the connection layer 20 may be a double-sided adhesive tape or an adhesive film with a certain bonding strength, and this embodiment does not impose any limitation on this.

[0029] Optionally, in an embodiment of the present application, the heating layer 12 includes a circuit terminal 121, and the circuit terminal 121 is electrically connected to a power supply circuit, for example, connected to a protection circuit of a battery, and the heating layer 12 generates heat to provide heat for the battery.

[0030] In the embodiment of the present application, the heating layer 12 includes a heating circuit, and the heating circuit is led out by the circuit terminal 121, and the battery and the heating layer 12 can be electrically connected through the circuit terminal 121. Under low temperature conditions, the activity of the battery is limited by the temperature, and the heating layer 12 generates heat to provide heat for the battery to maintain normal operation of the battery.

[0031] It should be noted that the material of the heating layer 12 can be copper foil or graphene, and this embodiment does not impose any limitation on this.

[0032] Optionally, in the embodiment of the present application, the heat dissipation layer 13 covers the heat generating layer 12 , and the heat generated by the heat generating layer 12 is conducted to the battery through the heat dissipation layer 13 .

[0033] In the embodiment of the present application, the area of ​​the heat dissipation layer 13 can be larger than the heating layer 12, and the heat dissipation layer 13 needs to completely cover the heating layer 12, and the heat generated by the heating layer 12 is conducted to the battery through the heat dissipation layer 13. The heat dissipation layer 13 covering the heating layer 12 can try to dissipate the heat generated by the heating layer 12 through the heat dissipation layer 13, which has the beneficial effect of improving the efficiency of using the heat of the heating layer 12.

[0034] It should be noted that the material of the heat dissipation layer 13 may be graphene, thermal conductive adhesive or boron nitride, and this embodiment does not impose any limitation on this.

[0035] Optionally, in the embodiment of the present application, the heat insulating layer 11 covers the heat generating layer 12 , and the heat insulating layer 11 isolates the heat generated by the heat generating layer 12 and the heat of the battery between the heat insulating layer 11 and the battery.

[0036] In the embodiment of the present application, the area of ​​the thermal insulation layer 11 can be larger than the heat generating layer 12, and the thermal insulation layer 11 needs to completely cover the heat generating layer 12. The heat generated by the heat generating layer 12 passes through the thermal insulation layer 11 and is isolated by the thermal insulation layer 11. The thermal insulation layer 11 covering the heat generating layer 12 can ensure that the heat generated by the heat generating layer 12 is isolated by the thermal insulation layer 11 as much as possible, which has the beneficial effect of preventing the heat generated by the heat generating layer 12 or the battery from being conducted to the outside of the functional layer component 1.

[0037] It should be noted that the material of the heat insulation layer 11 may be aerogel.

[0038] Optionally, in an embodiment of the present application, the functional layer component 1 and the connection layer 20 component are integrally arranged.

[0039] In the embodiment of the present application, the functional layer component 1 can be integrally provided with the connecting layer 20 component. It can be understood that the connecting layer 20 is applied to one side of the protective layer 10, the connecting layer 20 is applied to at least one side of the heat insulating layer 11, the connecting layer 20 is applied to at least one side of the heating layer 12, and the connecting layer 20 is applied to at least one side of the heat dissipation layer 13. The integrally provided functional layer component 1 and the connecting layer 20 component have the beneficial effect of preventing the relative displacement between the functional layer component 1 and the connecting layer 20 component from affecting the performance of the composite adhesive tape.

[0040] Optionally, in an embodiment of the present application, the thickness of the composite adhesive tape along the first direction is H, where H≤2mm; the thickness of the protective layer 10 along the first direction is a, the thickness of the thermal insulation layer 11 along the first direction is b, the thickness of the heating layer 12 along the first direction is c, and the thickness of the heat dissipation layer 13 along the first direction is d, where a≤1mm, b≤1mm, c≤1mm, and d≤1mm.

[0041] In the embodiment of the present application, the thickness of the composite adhesive paper is H≤2mm. The composite adhesive paper is wrapped around the outside of the battery, which protects the battery while isolating the heat generated by the battery and the heating layer 12 and dissipating the heat between the composite adhesive paper and the battery. The thickness of the composite adhesive paper should be able to achieve the above functions and be as thin as possible to meet the current trend of miniaturization of components. The protective layer 10 is used to protect the functional layer component 1 to prevent the functional layer component 1 from being damaged by external components and causing damage to affect the use of the composite adhesive paper. Therefore, the protective layer 10 must have a certain thickness a, a≤1mm, and the specific thickness of the protective layer 10 can be determined according to actual conditions. The heat insulation layer 11 is used to isolate heat and prevent heat from being transmitted from the battery or the heating layer 12 to affect the user experience. Therefore, the protective layer 10 must have a certain thickness b to ensure the insulation effect, b≤1mm, and the specific thickness of the heat insulation layer 11 can be determined according to actual conditions. The heating layer 12 is used to dissipate heat. In order to maintain the activity of the battery to maintain the operation of the battery, the heating layer 12 needs to provide a certain amount of heat for the battery. The heating layer 12 has a heating circuit, so the heating layer 12 has a certain thickness c, c≤1mm, and the specific thickness of the heating layer 12 can be determined according to actual conditions. The heat dissipation layer 13 is used to dissipate heat, so the heat dissipation layer 13 must have a certain thickness d to ensure the dissipation effect, d≤1mm, and the specific thickness of the heat dissipation layer 13 can be determined according to actual conditions.

[0042] It should also be noted that the connection layer 20 can achieve the connection of the functional layers in the adjacent functional layer components 1. The specific thickness of the connection layer 20 can be determined according to actual conditions, and this embodiment does not impose any limitation on this.

[0043] Optionally, in an embodiment of the present application, a battery is also provided, including a battery cell, a battery protection plate and the composite adhesive paper as described above, the battery protection plate and the battery cell are electrically connected, and the composite adhesive paper is coated on the periphery of the battery cell and the battery protection plate.

[0044] In an embodiment of the present application, the battery cell and the battery protection plate are electrically connected, and the composite adhesive tape is coated on the periphery of the battery cell and the battery protection plate. In practical applications, the battery protection plate is generally arranged at the head of the battery cell. Specifically, when the battery cell is charged, the degree of heat generated by the battery protection plate is generally higher than the degree of heat generated by the battery cell, resulting in uneven heat in various parts of the battery, which can easily lead to battery explosion. By coating the composite adhesive tape on the periphery of the battery cell and the battery protection plate, on the one hand, the heat generated by the battery protection plate and the battery cell can be isolated between the composite adhesive tape and the battery cell to prevent the heat from being conducted to components other than the battery. On the other hand, the heat generated by the battery protection plate and the battery cell can also be dissipated between the composite adhesive tape and the battery cell, alleviating the problem of high local heat in the battery. In an embodiment of the present application, by providing the composite adhesive tape and coating the composite adhesive tape on the periphery of the battery cell and the battery protection plate, it has the beneficial effect of preventing heat from being conducted outside the battery and improving the user experience, and also has the beneficial effect of dissipating the heat generated by the battery cell and the battery protection plate to alleviate the excessively high local temperature of the battery.

[0045] It should be noted that the composite adhesive tape provided in this embodiment is also applicable to other batteries with winding structure and stacking structure, such as soft-pack batteries, aluminum shell batteries, cylindrical batteries, etc., and this embodiment does not impose any limitation on this.

[0046] Optionally, in an embodiment of the present application, an electronic device is also provided, comprising the battery as described above, the battery and the electronic device are electrically connected, and the battery is used to power the electronic device.

[0047] In an embodiment of the present application, the battery is used to power an electronic device, and an electronic device is provided with a battery as described above. Since the battery includes a composite adhesive tape, in actual applications, when the battery generates heat, the setting of the functional layer component 1 prevents the heat from overflowing. Furthermore, the functional layer component 1 can also dissipate the heat between the functional layer component 1 and the battery. It can be understood that in actual applications, the battery may generate uneven heat. For example, the local battery temperature is higher than the average temperature of the battery, and the functional layer component 1 can dissipate the heat of the local high temperature part to between the functional layer component 1 and the battery, thereby balancing the temperature of the battery surface. On the one hand, the above-mentioned battery can isolate the heat generated by the battery protection plate and the battery cell between the composite adhesive tape and the battery cell to prevent the heat from being conducted to components other than the battery. On the other hand, the heat generated by the battery protection plate and the battery cell can also be dissipated between the composite adhesive tape and the battery cell, alleviating the problem of high local heat in the battery. In the embodiment of the present application, by providing a composite adhesive tape and wrapping the composite adhesive tape around the periphery of the battery cell and the battery protection plate, it has the beneficial effect of preventing heat from being conducted outside the battery, thereby improving the user experience. It also has the beneficial effect of dissipating the heat generated by the battery cell and the battery protection plate, thereby alleviating the local excessive temperature of the battery.

[0048] Exemplarily, the mobile electronic device may be a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc., and the non-mobile electronic device may be a personal computer (PC), a television (TV), a teller machine, or an automated machine, etc., which is not specifically limited in the embodiments of the present application.

[0049] It should be noted that the electronic device in the embodiment of the present invention includes the mobile electronic device and the non-mobile electronic device described above. It should be noted that, in this article, the term "includes", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0050] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A composite adhesive tape for coating a battery, characterized in that: include: A functional layer component (1) and a connection layer component (2), wherein the functional layer component (1) and the connection layer component (2) each comprise a plurality of structural layers, wherein the structural layers of the functional layer component (1) and the structural layers of the connection layer component (2) are alternately stacked, the functional layer component (1) is connected to a battery via the connection layer component (2), and the functional layer component (1) is used to block heat between the functional layer component (1) and the battery, and to dissipate heat between the functional layer component (1) and the battery.

2. The composite adhesive tape according to claim 1, characterized in that: The composite adhesive tape comprises a first direction perpendicular to the maximum surface, and the structural layers of the functional layer assembly (1) comprise a protective layer (10), a heat insulating layer (11), a heating layer (12) and a heat dissipation layer (13) which are sequentially arranged close to the battery and stacked along the first direction, the heating layer (12) is used to generate heat, the heat dissipation layer (13) is used to dissipate heat, and the heat insulating layer (11) is used to block heat between the heat insulating layer (11) and the battery.

3. The composite adhesive tape according to claim 2, characterized in that: The structural layer of the connecting layer assembly (2) comprises a plurality of connecting layers (20); the protective layer (10) and the heat insulating layer (11) are connected via at least one of the connecting layers (20); the heat insulating layer (11) and the heat generating layer (12) are connected via at least one of the connecting layers (20); the heat generating layer (12) and the heat dissipating layer (13) are connected via at least one of the connecting layers (20); and the heat dissipating layer (13) and the battery are connected via at least one of the connecting layers (20).

4. The composite adhesive tape according to claim 2, characterized in that: The heating layer (12) comprises a circuit terminal (121), the circuit terminal (121) being used for being electrically connected to a power supply circuit, and the heating layer (12) generates heat to provide heat for the battery.

5. The composite adhesive tape according to claim 2, characterized in that: The heat dissipation layer (13) covers the heat generation layer (12), and the heat generated by the heat generation layer (12) is conducted to the battery through the heat dissipation layer (13).

6. The composite adhesive tape according to claim 2, characterized in that: The heat insulating layer (11) covers the heat generating layer (12), and the heat insulating layer (11) insulates the heat generated by the heat generating layer (12) and the heat of the battery between the heat insulating layer (11) and the battery.

7. The composite adhesive tape according to claim 1, characterized in that: The functional layer component (1) and the connection layer component (2) are arranged in one piece.

8. The composite adhesive tape according to claim 2, characterized in that: The thickness of the composite adhesive tape along the first direction is H, where H≤2mm; The thickness of the protective layer (10) along the first direction is a, the thickness of the heat insulating layer (11) along the first direction is b, the thickness of the heat generating layer (12) along the first direction is c, and the thickness of the heat dissipating layer (13) along the first direction is d, wherein a≤1 mm, b≤2 mm, c≤2 mm, and d≤2 mm.

9. A battery, characterized in that: It comprises a battery cell, a battery protection plate and the composite adhesive paper as described in any one of claims 1 to 8, wherein the battery protection plate and the battery cell are electrically connected, and the composite adhesive paper is wrapped around the periphery of the battery cell and the battery protection plate.

10. An electronic device, characterized in that: The invention comprises the battery as claimed in claim 9, wherein the battery is electrically connected to the electronic device, and the battery is used to power the electronic device.

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