Conductive film, battery and electronic equipment
Through the design of the conductive film, the degluing of the electrolytic adhesive layer is controlled by using an external power supply, the safety problems during the battery disassembly are solved, and the safe disassembly of the battery and the protection of the battery cell are realized.
Patent Information
- Application Number
- CN202510820256.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-18
- Publication Date
- 2025-08-12
AI Technical Summary
Existing batteries are prone to deformation, damage and fire during disassembly, and current flows to the battery cell when the conductive layer is short-circuited and affects safety.
The conductive film structure is adopted, including a substrate, an adhesive layer, a conductive layer and an electrolytic layer. The conductive layer is opposite to the substrate, and the electrolytic layer is bonded to the battery compartment. The electrolytic layer is connected to the battery compartment through an external power supply to degreasate the adhesive, thereby realizing the disassembly of the battery and avoiding the current flowing to the battery cell when the conductive layer is short-circuited.
The battery is safely disassembled, avoiding the risk of damage and short circuit of the battery cell, and ensuring the safety of the battery cell.
Smart Images
Figure CN120473626A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of battery technology, and in particular to a conductive film, a battery, and an electronic device. Background Art
[0002] In electronic devices, batteries are typically secured within the battery compartment using adhesive bonding. For example, the battery can be secured using a peel-off adhesive tape covering the battery cell and bonding it to the compartment wall. Alternatively, the battery cell can be directly bonded to the compartment wall using double-sided tape. Although these adhesive bonding methods allow for disassembly of the battery, the battery may experience varying degrees of deformation, damage, and fire during disassembly.
[0003] Based on this, wrapping films containing electrolyte gel began to appear. The wrapping films consist of a conductive layer and an electrolyte gel layer that adhere to each other. The conductive layer is bonded to the battery cell, and the electrolyte gel layer is bonded to the battery compartment wall. When removing the battery cell, the conductive layer is energized, causing the electrolyte gel to dissolve, allowing the wrapping film to separate from the battery compartment, allowing the battery cell to be removed from the compartment.
[0004] However, the conductive layer is directly bonded to the surface of the battery cell. If a short circuit occurs in the conductive layer, current will flow into the battery cell, affecting the safety of the battery cell. Summary of the Invention
[0005] In view of this, the present application provides a conductive film, a battery and an electronic device to solve, to a certain extent, the problem that the conductive layer in the existing wrapping film is directly bonded to the surface of the battery cell. If a short circuit occurs in the conductive layer, the current will flow to the battery cell, affecting the safety of the battery cell.
[0006] According to the first aspect of the present application, a conductive film is provided, which includes a substrate, an adhesive layer, a conductive layer and an electrolytic layer. The adhesive layer and the conductive layer are respectively connected to the two sides of the substrate opposite to each other in the thickness direction, and the electrolytic layer is connected to the side of the conductive layer opposite to the substrate in the thickness direction. The electrolytic layer is used to bond to the compartment wall of the battery compartment, and the conductive layer is used to connect to an external power supply.
[0007] Preferably, part of the substrate is exposed outside the conductive layer, the conductive layer includes a connector and a conductive member, the connector and the conductive member are both adhered to the substrate, the connector is connected to the conductive member, the conductive member is covered by the electrolytic gel layer, the connector is exposed outside the electrolytic gel layer, and the connector is used to connect to the external power supply.
[0008] Preferably, the conductive layer includes a connector, and the number of the conductive members is at least two, at least two of the conductive members are arranged at intervals, and two adjacent conductive members are connected in series through the connector, and the connector is attached to the substrate.
[0009] Preferably, the conductive film includes an insulating layer, and parts of the connecting member and the connecting member are both covered by the insulating layer.
[0010] Preferably, the conductive layer is a conductive ink layer, and the thickness of the conductive ink layer is greater than or equal to 1 μm and less than or equal to 3.5 μm.
[0011] Preferably, the conductive layer covers the substrate, the conductive layer includes a conductive area, an insulating area and a connecting area, the conductive film also includes an insulating layer, the insulating area is covered by the insulating layer, the conductive area is covered by the electrolytic gel layer, and the connecting area is used to connect to the external power supply.
[0012] Preferably, the conductive layer is formed by electroplating a conductive material on the substrate, and the thickness of the conductive layer is greater than or equal to 0.05 μm and less than or equal to 3.5 μm.
[0013] Preferably, the insulating layer is an insulating ink layer, and the thickness of the insulating ink layer is greater than or equal to 1 μm and less than or equal to 12 μm.
[0014] Preferably, the insulating layer is insulating tape, and the thickness of the insulating tape is greater than or equal to 0.005 mm and less than or equal to 0.05 mm.
[0015] Preferably, the peeling force of the adhesive layer is greater than or equal to 0.3 kgf / 25 mm and less than or equal to 0.8 kgf / 25 mm.
[0016] Preferably, the conductive film includes a pasting member, the adhesive layer includes an isolation portion and a plurality of adhesive portions, the plurality of adhesive portions are arranged at intervals, the isolation portion is covered by the pasting member, and the plurality of adhesive portions are exposed outside the pasting member.
[0017] Preferably, the thickness of the bonding member is greater than or equal to 1 μm and less than or equal to 3.5 μm; and / or, the diameter of the bonding portion is greater than or equal to 0.6 mm and less than or equal to 2.0 mm; And / or, the thickness of the adhesive layer is greater than or equal to 18 μm and less than or equal to 25 μm.
[0018] Preferably, the adhesive layer is divided into a first adhesive area, two second adhesive areas, and two third adhesive areas, the two second adhesive areas are respectively located on both sides of the first adhesive area in the length direction of the substrate, the two second adhesive areas respectively correspond to the two third adhesive areas, the third adhesive area is located on the side of the corresponding second adhesive area facing away from the first adhesive area in the length direction, the area of the first adhesive area is larger than that of the third adhesive area, and the area of the third adhesive area is larger than that of the second adhesive area; The area of the bonding portion on the first bonding area is larger than that on the second bonding area, and the area of the bonding portion on the third bonding area is larger than that on the second bonding area.
[0019] Preferably, the thickness of the substrate is greater than or equal to 10 μm and less than or equal to 30 μm; And / or, the thickness of the electrolytic gel layer is greater than or equal to 0.03 mm and less than or equal to 0.12 mm.
[0020] According to a second aspect of the present application, a battery is provided, comprising a battery cell and the above-mentioned conductive film, wherein the adhesive layer is bonded to the battery cell.
[0021] According to a third aspect of the present application, an electronic device is provided, comprising the above-mentioned battery and the battery compartment, wherein the electrolytic layer is bonded to the compartment wall of the battery compartment.
[0022] The conductive film of the present application includes a substrate, an adhesive layer, a conductive layer and an electrolytic layer. The adhesive layer and the conductive layer are respectively connected to the two sides of the substrate facing away from each other, and the electrolytic layer is connected to the side of the conductive layer facing away from the substrate. When the battery with the conductive film is installed in the battery compartment, the electrolytic layer is bonded to the compartment wall of the battery compartment. When disassembling the battery, an external power supply can be used to energize the conductive layer to dissolve the electrolytic layer, so that the battery can be removed from the battery compartment. In this way, the substrate in the conductive film is bonded to the battery cell through the adhesive layer, and the substrate can achieve isolation between the conductive layer and the battery cell, thereby preventing current from flowing to the battery cell when a short circuit occurs in the conductive layer, thereby ensuring the safety of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.
[0024] Figure 1A schematic plan view showing a first viewing angle of the conductive film in the first embodiment; Figure 2 A schematic plan view showing another perspective of the conductive film in the first embodiment; Figure 3 A diagram showing the relative positions of the conductive layer and the substrate in Example 1; Figure 4 A diagram showing the relative positions of the conductive layer and the insulating layer in Example 1; Figure 5 A schematic diagram showing the planar structure of the conductive film in the second embodiment is shown; Figure 6 A diagram showing the relative positions of the conductive layer and the insulating layer in the second embodiment; Figure 7 Show Figure 2 A cross-sectional view of the conductive film taken along AA'; Figure 8 Show Figure 5 A cross-sectional view of the conductive film taken along BB'; Figure 9 A schematic diagram showing the three-dimensional structure of a battery from one perspective; Figure 10 A schematic diagram showing the structure of the battery from another perspective.
[0025] Icons: 1-conductive film; 11-substrate; 12-adhesive layer; 121-adhesive part; 122-first bonding area; 123-second bonding area; 124-third bonding area; 13-conductive layer; 131-connector; 132-conductive part; 133-connector; 134-conductive area; 135-connecting area; 14-electrolytic layer; 15-insulating layer; 16-bonding part; 2-battery cell; 3-blue film; L1-length direction; L2-width direction; L3-thickness direction. DETAILED DESCRIPTION
[0026] The following detailed description is provided to help the reader gain a comprehensive understanding of the methods, devices, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will be apparent upon understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein. Rather, except for operations that must occur in a particular order, changes may be made that will be apparent upon understanding the disclosure of this application. Furthermore, descriptions of features known in the art may be omitted for clarity and brevity.
[0027] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many possible ways to implement the methods, devices, and / or systems described herein that will be apparent upon understanding the disclosure of this application.
[0028] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being “on,” “connected to,” “coupled to,” “over,” or “overlaying” another element, it may be directly “on,” “connected to,” “coupled to,” “over,” or “overlaying” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on,” “directly connected to,” “directly coupled to,” “directly over,” or “directly covering” another element, there may be no other elements present between them.
[0029] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.
[0030] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are used only to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Thus, a first member, component, region, layer, or portion in the examples described herein may also be referred to as a second member, component, region, layer, or portion without departing from the teachings of the examples.
[0031] For ease of description, spatially relative terms such as "above," "upper," "below," and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatially relative terms are intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element would subsequently be located "below" or "lower" relative to the other element. Thus, the term "above" encompasses both the orientations of "above" and "below," depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatially relative terms used herein will be interpreted accordingly.
[0032] The terms used herein are intended only to describe various examples and are not intended to limit the present disclosure. Unless the context clearly indicates otherwise, the singular is intended to include the plural. The terms "comprise," "include," and "have" list the presence of stated features, quantities, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.
[0033] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the drawings may occur. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include changes in shapes that occur during manufacturing.
[0034] The features of the examples described herein can be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.
[0035] For convenience in describing the conductive film 1 , the conductive film 1 will be described below with reference to the length direction L1 , the width direction L2 , and the thickness direction L3 of the substrate 11 in the conductive film 1 .
[0036] According to a first aspect of the present application, a conductive film 1 is provided, such as Figures 1 to 8 As shown, the conductive film 1 includes a substrate 11, an adhesive layer 12, a conductive layer 13 and an electrolytic layer 14. The adhesive layer 12 and the conductive layer 13 are respectively connected to the two sides of the substrate 11 opposite to each other in the thickness direction L3, and the electrolytic layer 14 is connected to the side of the conductive layer 13 facing away from the substrate 11 in the thickness direction L3. When the battery with the conductive film 1 is installed in the battery compartment, the electrolytic layer 14 is bonded to the compartment wall of the battery compartment. When disassembling the battery, an external power supply can be used to energize the conductive layer 13 to dissolve the electrolytic glue, so that the battery can be removed from the battery compartment. In this way, the substrate 11 in the conductive film 1 is bonded to the battery cell 2 through the adhesive layer 12, and the substrate 11 can achieve isolation between the conductive layer 13 and the battery cell 2, thereby preventing the current from flowing to the battery cell 2 when the conductive layer 13 is short-circuited, thereby ensuring the safety of the battery cell 2.
[0037] Optionally, the substrate 11 may be a PET film (Polyethylene terephthalate), a PI film (Polyimide), a PP film (Polypropylene), etc. The substrate 11 may be transparent or opaque.
[0038] Preferably, the thickness of the electrolytic adhesive layer 14 is greater than or equal to 0.03 mm and less than or equal to 0.12 mm. This ensures that the electrolytic adhesive layer 14 is thin while meeting the requirements for adhesion strength to the battery compartment wall, thereby preventing the conductive film 1 from occupying too much space within the battery compartment. Alternatively, the thickness of the electrolytic adhesive layer 14 can be 0.03 mm, 0.04 mm, 0.05 mm, 0.07 mm, 0.08 mm, 0.10 mm, 0.11 mm, or 0.12 mm, etc.
[0039] Furthermore, the thickness of the substrate 11 is greater than or equal to 10 μm and less than or equal to 30 μm. This allows the substrate 11 to meet strength requirements while being relatively thin, thereby preventing the conductive film 1 from occupying too much space within the battery compartment. Optionally, the thickness of the substrate 11 can be 10 μm, 12 μm, 15 μm, 18 μm, 20 μm, 21 μm, 23 μm, 25 μm, 26 μm, 28 μm, or 30 μm, etc.
[0040] In addition, the adhesive force between the adhesive layer 12 and the battery cell 2 is relatively low, so as to facilitate the separation of the conductive film 1 from the battery cell 2. Optionally, the adhesive layer 12 can be in the form of an adhesive layer with relatively low adhesion or a form in which only a plurality of discrete adhesive portions 121 are bonded to the battery cell 2.
[0041] When the adhesive layer 12 is a weak adhesive layer, the peeling force of the adhesive layer 12 is greater than or equal to 0.3 kgf / 25 mm and less than or equal to 0.8 kgf / 25 mm. For example, the adhesive layer 12 can be an acrylic adhesive layer, a silicone layer, etc. with a peeling force within the above range.
[0042] When the adhesive layer 12 is bonded to the battery cell 2 through a plurality of discrete bonding portions 121, the adhesive layer 12 may be made of an acrylic adhesive layer, a silicone adhesive layer, etc., with a peeling force greater than or equal to 1.1 kgf / 25 mm and less than or equal to 1.4 kgf / 25 mm. Figure 1As shown, the conductive film 1 includes a fitting 16, and the adhesive layer 12 includes an isolating portion and a plurality of adhesive portions 121. The plurality of adhesive portions 121 are arranged at intervals, the isolating portion is covered by the fitting 16, and the plurality of adhesive portions 121 are exposed outside the fitting 16. Since the isolating portion is covered by the fitting 16, only the discrete plurality of adhesive portions 121 will be bonded to the battery cell 2. Compared with the whole-piece adhesive layer 12, the manner in which the discrete plurality of adhesive portions 121 are bonded to the battery cell 2 can facilitate the peeling of the battery cell 2 from the conductive film 1. Optionally, the fitting 16 can be a layered structure formed by printing ink on the isolating portion on the adhesive layer 12, so that the fitting 16 can isolate the battery cell 2 from the isolating portion. The thickness of the fitting 16 is greater than or equal to 1 μm and less than or equal to 3.5 μm. Optionally, the thickness of the bonding member 16 may be 1 μm, 1.2 μm, 1.5 μm, 1.9 μm, 2.0 μm, 2.4 μm, 2.5 μm, 2.7 μm, 3.0 μm, 3.3 μm, or 3.5 μm. The thickness of the adhesive layer 12 may be greater than or equal to 18 μm and less than or equal to 25 μm. For example, the thickness of the adhesive layer 12 may be 18 μm, 19 μm, 20 μm, 21 μm, 22 μm, 23 μm, 24 μm, or 25 μm.
[0043] Furthermore, when the conductive film 1 is bonded to the battery cell 2 via a plurality of discrete bonding portions 121, the bonding portions 121 may be in any shape, such as a triangle, a circle, a quadrilateral, a pentagon, etc. Preferably, the bonding portion 121 is circular, and the diameter of the bonding portion 121 is greater than or equal to 0.6 mm and less than or equal to 2.0 mm. For example, the diameter of the bonding portion 121 may be 0.6 mm, 0.7 mm, 0.9 mm, 1.0 mm, 1.2 mm, 1.4 mm, 1.5 mm, 1.8 mm, or 2.0 mm.
[0044] In addition, if Figure 1As shown, when the conductive film 1 is bonded to the battery cell 2 through a plurality of discrete bonding portions 121, the bonding layer 12 can be divided into a first bonding area 122, two second bonding areas 123 and two third bonding areas 124. The two second bonding areas 123 are respectively located on both sides of the first bonding area 122 in the length direction L1. The two second bonding areas 123 correspond to the two third bonding areas 124 respectively. The third bonding area 124 is located on the side of the corresponding second bonding area 123 facing away from the first bonding area in the length direction L1. On one side of the bonding area 122, the area of the first bonding area 122 is larger than the area of the third bonding area 124, and the area of the third bonding area 124 is larger than the area of the second bonding area 123. The bonding portion 121 on the first bonding area 122 is used to bond to the surface of the battery cell 2 facing the battery compartment in the thickness direction. The bonding portions 121 on the two second bonding areas 123 are used to bond to both sides of the battery cell 2 in the width direction. The two third bonding areas 124 are both used to bond to the surface of the battery cell 2 facing away from the battery compartment in the thickness direction. The area of the bonding portion 121 on the first bonding area 122 is larger than the area of the bonding portion 121 on the second bonding area 123, and the area of the bonding portion 121 on the third bonding area 124 is larger than the area of the bonding portion 121 on the second bonding area 123. In this way, the bonding force between the bonding part 121 on the first bonding area 122 and the battery cell 2 is relatively large, which can ensure the stability of the battery fixation; the bonding force between the bonding part 121 on the third bonding area 124 and the battery cell 2 is relatively large, which can prevent the conductive film 1 from warping; the bonding force between the bonding part 121 on the second bonding area 123 and the battery cell 2 is relatively small, which can facilitate the separation of the conductive film 1 and the battery cell 2.
[0045] It should be noted that Figure 1 The dotted lines used to separate the first bonding area 122 and the second bonding area 123 and the second bonding area 123 and the third bonding area 124 are only for the convenience of describing the bonding position of the adhesive layer 12 and the battery cell 2. In the entity of the conductive film 1, there is no dividing dotted line in the adhesive layer 12.
[0046] In addition, when the conductive film 1 is not installed, blue films 3 can be attached to both sides of the conductive film 1. Specifically, the two blue films 3 are attached to the adhesive layer 12 and the electrolytic layer 14 respectively. When the conductive film 1 is installed on the battery cell 2, as shown in FIG. Figure 7 As shown, the blue film 3 bonded to the adhesive layer 12 is removed, and the electrolytic layer 14 is bonded to the blue film 3. When the battery is installed in the battery compartment, the blue film 3 bonded to the electrolytic layer 14 can be removed to install the battery in the battery compartment.
[0047] Optionally, the conductive layer 13 may be formed by electroplating or coating with conductive ink. The specific form of the conductive film 1 will be described below in conjunction with the first and second embodiments.
[0048] Example 1 In this embodiment, the conductive film 1 can be bonded to the battery cell 2 through multiple discrete bonding parts 121, or can be bonded to the battery cell 2 through an adhesive layer 12 with a peeling force greater than or equal to 0.3 kgf / 25 mm and less than or equal to 0.8 kgf / 25 mm.
[0049] like Figure 2 、 Figure 3 and Figure 7 As shown, the conductive layer 13 may include a connector 131 and a conductive member 132. Both connector 131 and conductive member 132 are attached to the side of the substrate 11 facing away from the adhesive layer 12. Connector 131 is connected to conductive member 132. Connector 131 is used to connect to an external power source, so that current can flow through connector 131 to conductive member 132. Conductive member 132 is covered by the electrolytic gel layer 14, and connector 131 is exposed outside the electrolytic gel layer 14. When connector 131 is connected to an external power source, current flows through connector 131 and conductive member 132 to the electrolytic gel layer 14, causing the electrolytic gel to dissolve, thereby allowing the conductive film 1 to separate from the battery compartment wall, thereby removing the battery from the battery compartment.
[0050] Optionally, the connection member 131 may be provided at a position close to an end portion of the substrate 11 in the width direction L2 , so that the connection member 131 can be connected to an external power source.
[0051] Furthermore, the conductive layer 13 may further include a connector 133. There are at least two conductive members 132, and at least two conductive members 132 are connected in series via the connector 133. The connector 133 is attached to the side of the substrate 11 facing away from the adhesive layer 12. The at least two conductive members 132 are both covered by the electrolytic layer 14. In this way, the conductive layer 13 includes multiple conductive members 132 arranged at intervals, and the electrolytic layer 14 is divided into corresponding multiple sections. This allows the electrolytic layer 14 to avoid structures within the battery compartment that cannot come into contact with the electrolytic layer 14.
[0052] Optionally, the number of the conductive members 132 may be one, two, three, four or more. For example, when the number of the conductive members 132 is one, the conductive member 132 is connected to the connecting member 131, and there is no need to set the connecting member 133. The electrolytic gel layer 14 covers the conductive member 132. For example, when the number of the conductive members 132 is two, one of the conductive members 132 is connected to the connecting member 131 and is connected to the other conductive member 132 through the connecting member 133, thereby realizing the series connection of the two conductive members 132. The electrolytic gel layer 14 includes two separated parts. , the two parts respectively cover two conductive members 132; for another example, when the number of conductive members 132 is three, the connecting member 133 includes two disconnected parts, the first conductive member 132 is connected to the connecting member 131, and is connected to the second conductive member 132 through one part of the connecting member 133, and the second conductive member 132 is connected to the third conductive member 132 through the other part of the connecting member 133, thereby realizing the series connection of the three conductive members 132, and the electrolytic gel layer 14 includes three spaced parts, and the three parts respectively cover the three conductive members 132.
[0053] like Figure 2 and Figure 4 As shown, the conductive film 1 includes an insulating layer 15. Portions of the connector 131 and the linking member 133 are both covered by the insulating layer 15. The portion of the connector 131 exposed outside the insulating layer 15 can be used to connect to an external power source to energize the conductive layer 13. The linking member 133 and the connector 131, except for the portion used for connecting to the external power source, are covered by the insulating layer 15 to prevent short circuits.
[0054] Preferably, only the end of the connecting member 131 away from the conductive member 132 is exposed outside the insulating layer 15 .
[0055] Example 2 In this embodiment, the conductive film 1 can be bonded to the battery cell 2 through multiple discrete bonding parts 121, or can be bonded to the battery cell 2 through an adhesive layer 12 with a peeling force greater than or equal to 0.3 kgf / 25 mm and less than or equal to 0.8 kgf / 25 mm.
[0056] like Figure 5 、 Figure 6 and Figure 8 As shown, the conductive layer 13 includes a conductive area 134, an insulating area (covered by the insulating layer 15, Figure 5 、 Figure 6 and Figure 8The conductive film 1 also includes an insulating layer 15 (not shown) and a connecting area 135. The insulating area is covered by the insulating layer 15, and the conductive area 134 is covered by the electrolytic gel layer 14. The connecting area 135 is exposed outside the insulating layer 15 and the electrolytic gel layer 14. The connecting area 135 is used to connect to an external power source. In this way, by connecting the connecting area 135 to the external power source, electricity can be supplied to the conductive layer 13. The insulating area is covered by the insulating layer 15 to avoid short circuits. The conductive area 134 is covered by the electrolytic gel layer 14, allowing current to flow through the conductive area 134 to the electrolytic gel. When the connecting area 135 is connected to the external power source, current flows through the conductive area 134 to the electrolytic gel layer 14, and the electrolytic gel degrades, thereby allowing the conductive film 1 to be separated from the compartment wall of the battery compartment, thereby removing the battery from the compartment.
[0057] Optionally, the connection region 135 may be located near an end of the conductive layer 13 in the width direction L2 , so that the connection region 135 can be connected to an external power source.
[0058] Optionally, the number of conductive areas 134 can be one, two, three or more, and the electrolytic layer 14 can be divided into parts equal to the number of conductive areas 134 . The parts of the electrolytic layer 14 correspond one-to-one to the conductive areas 134 , and the conductive areas 134 are covered by the corresponding parts of the electrolytic layer 14 .
[0059] Preferably, the conductive layer 13 is a layered structure formed by electroplating a conductive material on the substrate 11. The conductive material can be a metal material such as copper, aluminum, or other conductive materials such as an alloy. The thickness of the conductive layer 13 is greater than or equal to 0.05 μm and less than or equal to 3.5 μm. For example, the thickness of the conductive layer 13 can be 0.05 μm, 0.3 μm, 0.8 μm, 1.0 μm, 1.3 μm, 1.5 μm, 1.8 μm, 2.0 μm, 2.5 μm, 3.0 μm, or 3.5 μm.
[0060] According to a second aspect of the present application, a battery is provided, such as Figure 9 and Figure 10 As shown, the battery includes a battery core 2 and the above-mentioned conductive film 1, and the battery core 2 is bonded to the adhesive layer 12. The battery has the same technical effects as the above-mentioned conductive film 1, which will not be repeated here.
[0061] In addition, when the battery is not installed in the battery compartment, the electrolytic gel layer 14 is attached to the blue film 3 to protect the electrolytic gel layer 14 .
[0062] According to a third aspect of the present application, an electronic device is provided. The electronic device includes the above-mentioned battery and a battery compartment. The electrolytic layer 14 is bonded to the compartment wall of the battery compartment to fix the battery.
[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A conductive film, characterized in that The conductive film includes a substrate, an adhesive layer, a conductive layer and an electrolytic layer. The adhesive layer and the conductive layer are respectively connected to the two sides of the substrate opposite to each other in the thickness direction. The electrolytic layer is connected to the side of the conductive layer opposite to the substrate in the thickness direction. The electrolytic layer is used to bond to the wall of the battery compartment, and the conductive layer is used to connect to an external power supply.
2. The conductive film according to claim 1, wherein Part of the substrate is exposed outside the conductive layer, and the conductive layer includes a connector and a conductive member. The connector and the conductive member are both attached to the substrate, the connector is connected to the conductive member, and the conductive member is covered by the electrolytic gel layer. The connector is exposed outside the electrolytic gel layer and is used to connect to the external power supply.
3. The conductive film according to claim 2, wherein The conductive layer includes a connecting piece, the number of the conductive pieces is at least two, the at least two conductive pieces are spaced apart, two adjacent conductive pieces are connected in series via the connecting piece, and the connecting piece is attached to the substrate.
4. The conductive film according to claim 3, wherein The conductive film includes an insulating layer, and parts of the connecting member and the linking member are both covered by the insulating layer.
5. The conductive film according to claim 2, wherein The conductive layer is a conductive ink layer, and the thickness of the conductive ink layer is greater than or equal to 1 μm and less than or equal to 3.5 μm. The conductive film according to claim 1 , wherein: The conductive layer covers the substrate, and the conductive layer includes a conductive area, an insulating area and a connecting area. The conductive film also includes an insulating layer. The insulating area is covered by the insulating layer, the conductive area is covered by the electrolytic gel layer, and the connecting area is used to connect to the external power supply.
7. The conductive film according to claim 6, wherein The conductive layer is formed by electroplating a conductive material on the substrate, and a thickness of the conductive layer is greater than or equal to 0.05 μm and less than or equal to 3.5 μm.
8. The conductive film according to claim 4, 6 or 7, characterized in that: The insulating layer is an insulating ink layer, and the thickness of the insulating ink layer is greater than or equal to 1 μm and less than or equal to 12 μm.
9. The conductive film according to claim 4, 6 or 7, characterized in that: The insulating layer is insulating tape, and the thickness of the insulating tape is greater than or equal to 0.005 mm and less than or equal to 0.05 mm.
10. The conductive film according to any one of claims 1 to 7, characterized in that The peeling force of the adhesive layer is greater than or equal to 0.3 kgf / 25 mm and less than or equal to 0.8 kgf / 25 mm.
11. The conductive film according to any one of claims 1 to 7, characterized in that: The conductive film includes a pasting member, the adhesive layer includes an isolation portion and a plurality of adhesive portions, the plurality of adhesive portions are arranged at intervals, the isolation portion is covered by the pasting member, and the plurality of adhesive portions are exposed outside the pasting member.
12. The conductive film according to claim 11, wherein The thickness of the bonding member is greater than or equal to 1 μm and less than or equal to 3.5 μm; and / or, the diameter of the bonding portion is greater than or equal to 0.6 mm and less than or equal to 2.0 mm; And / or, the thickness of the adhesive layer is greater than or equal to 18 μm and less than or equal to 25 μm.
13. The conductive film according to claim 11, wherein The adhesive layer is divided into a first adhesive zone, two second adhesive zones, and two third adhesive zones. The two second adhesive zones are respectively located on both sides of the first adhesive zone in the length direction of the substrate. The two second adhesive zones correspond to the two third adhesive zones respectively. The third adhesive zone is located on a side of the corresponding second adhesive zone that is opposite to the first adhesive zone in the length direction. The area of the first adhesive zone is larger than that of the third adhesive zone, and the area of the third adhesive zone is larger than that of the second adhesive zone. The area of the bonding portion on the first bonding area is larger than that on the second bonding area, and the area of the bonding portion on the third bonding area is larger than that on the second bonding area.
14. The conductive film according to any one of claims 1 to 7, characterized in that The thickness of the substrate is greater than or equal to 10 μm and less than or equal to 30 μm; And / or, the thickness of the electrolytic gel layer is greater than or equal to 0.03 mm and less than or equal to 0.12 mm.
15. A battery, characterized in that: The battery comprises a battery core and the conductive film according to any one of claims 1 to 14, and the adhesive layer is bonded to the battery core.
16. An electronic device, characterized in that: The electronic device comprises the battery according to claim 15 and the battery compartment, and the electrolytic layer is bonded to the compartment wall of the battery compartment.