A flexible, stickable thin-film battery and electrical device

Abstract

The present invention relates to the field of battery technology and specifically discloses a flexible, adhesive-attached thin-film battery, comprising: a thin-film battery component, a sealing frame, and a release film. The outer surface of the thin-film battery component is provided with a sealing frame, and the upper surface of the sealing frame is coated with a release film. The sealing frame is used to encapsulate the electrolyte in the thin-film battery component and to bond the thin-film battery to electrical devices. By providing the sealing frame, the electrolyte in the thin-film battery component is encapsulated, and after tearing off the release film on the outer surface of the sealing frame, the thin-film battery can be attached and used immediately through the adhesive material attached to the sealing frame. This makes the installation of the thin-film battery more flexible and convenient, and since the battery generates electricity in the form of an electrolyte, the storage stability of the battery can also be improved by correspondingly treating the electrolyte.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a flexible, stickable thin-film battery and an electrical device. Background Art

[0002] With the introduction of flexible electronic devices and the application of wearable devices, people's requirements for flexible thin-film batteries are getting higher and higher. This is not only in people's lives, but also in some scenarios. Due to the low cost and high energy efficiency of flexible thin-film batteries, they are also used in industry. However, due to the particularity of their structure and installation process, traditional flexible batteries cannot be widely used in various electrical appliances of different shapes. There are great limitations in their use, resulting in a poor user experience.

[0003] The above content is only used to assist in understanding the technical solution of the present invention and does not constitute an admission that the above content is prior art. Summary of the Invention

[0004] The main purpose of the present invention is to provide a flexible, stickable thin-film battery and an electrical device, aiming to solve the technical problem that the flexible thin-film battery in the prior art has limitations in usage scenarios, resulting in a low user experience.

[0005] To achieve the above object, the present invention provides a flexible, adhesive-type thin-film battery, the battery comprising: a thin-film battery component, a sealing frame, and an anti-sticking film;

[0006] The outer surface of the thin film battery component is provided with the sealing frame, and the upper surface of the sealing frame is coated with the anti-sticking film;

[0007] The sealing frame is used to encapsulate the electrolyte in the thin film battery component and to bond the thin film battery and the electrical device.

[0008] Optionally, the thin film battery further includes an isolation film substrate, and the upper surface of the thin film battery component is coated with the isolation film substrate.

[0009] Optionally, the thin film battery component includes a battery substrate, and a through hole is provided on the isolation film substrate or the battery substrate.

[0010] Optionally, an anti-sticking film frame is further provided on the outer surface of the sealant frame.

[0011] Optionally, the thin film battery component includes a battery substrate, a separator and an electrode layer;

[0012] The electrode layer is disposed on the upper surface of the battery substrate, and the separator is disposed on the upper surface of the electrode layer or between the electrode layer and the battery substrate.

[0013] Optionally, electrolyte solute is encapsulated inside the thin film battery component.

[0014] Optionally, the electrode layer includes: an electrode active material layer, a collector layer and a conductive glue;

[0015] The electrode active material layer is provided on the surface of the collector layer, and the conductive glue is provided at the end or edge of the collector layer.

[0016] Optionally, the through hole may be arranged directly above the gap between the positive and negative electrodes of the thin film battery.

[0017] Optionally, the thin film battery component may further include a battery substrate, a gel electrolyte layer and an electrode layer;

[0018] The upper surface of the battery substrate is coated with the electrode layer, and the upper surface of the electrode layer is coated with the gel electrolyte layer.

[0019] To achieve the above object, the present invention further provides an electrical device, which includes the thin film battery as described above.

[0020] The present invention proposes a flexible, adhesive-type thin-film battery, comprising a thin-film battery component, a sealing frame, and a release film. The sealing frame is provided on the outer surface of the thin-film battery component, and the release film is coated on the upper surface of the sealing frame. The sealing frame is used to encapsulate the electrolyte in the thin-film battery component and to bond the thin-film battery to an electrical device. Thus, by providing the sealing frame, the electrolyte in the thin-film battery component is encapsulated. In actual use, the thin-film battery can be bonded to the electrical device by simply removing the release film on the upper surface of the sealing frame and using the sticky material on the sealing frame. Power is then supplied to the electrical device via conductive adhesive. This convenient, fast, and flexible installation method avoids the complex installation and widespread application issues of traditional flexible thin-film batteries, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 1 This is a schematic diagram of the battery structure of the first embodiment of the flexible, attachable thin-film battery proposed by the present invention;

[0023] Figure 2This is a schematic structural diagram of a thin-film battery component of a first embodiment of a flexible, attachable thin-film battery proposed by the present invention;

[0024] Figure 3 This is a schematic diagram of the first battery structure of the first embodiment of the flexible, attachable thin-film battery proposed by the present invention;

[0025] Figure 4 A schematic diagram of the second battery structure of an embodiment of the flexible, attachable thin-film battery proposed by the present invention;

[0026] Figure 5 A schematic diagram of the battery structure of the second embodiment of the flexible, attachable thin-film battery proposed by the present invention;

[0027] Figure 6 A top view of the first battery structure of the second embodiment of the flexible, attachable thin-film battery proposed by the present invention;

[0028] Figure 7 A top view of the second battery structure of the second embodiment of the flexible, attachable thin-film battery proposed by the present invention;

[0029] Figure 8 This is a schematic diagram of the first appearance of the flexible, attachable thin-film battery according to the second embodiment of the present invention;

[0030] Figure 9 This is a schematic diagram of the second appearance of the flexible, bondable thin-film battery according to the second embodiment of the present invention.

[0031] Description of Figure Numbers:

[0032] Label name Label name 10 Anti-stick film 20 Sealant frame 30 Thin-film battery components 301 Battery substrate 302 electrode layer 303 diaphragm 3021 Collector layer 3022 Conductive adhesive 3023 Electrode active material layer 40 Isolation substrate 50 Anti-stick film frame 60 Thin-film batteries 601 Battery positive terminal 602 battery negative terminal

[0033] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0034] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, the descriptions of "first", "second", etc. in the present invention are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0038] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , Figure 1 This is a schematic diagram of the battery structure of the first embodiment of the flexible, attachable thin-film battery proposed by the present invention. Figure 2 This is a schematic structural diagram of the thin-film battery component of the first embodiment of the flexible, attachable thin-film battery proposed by the present invention. Figure 3 This is a schematic diagram of the first battery structure of the first embodiment of the flexible, attachable thin-film battery proposed by the present invention. Figure 4 This is a schematic diagram of the second battery structure of an embodiment of the flexible, attachable thin-film battery proposed in the present invention.

[0039] like Figure 1 As shown, in this embodiment, the flexible adhesive thin film battery includes a thin film battery component 30 , a sealing frame 20 and a release film 10 .

[0040] It should be noted that the sealant frame is provided at the edge (i.e., the outer surface) of the thin-film battery, enveloping the entire thin-film battery body to protect the internal structure of the battery body from contamination. The sealant frame is adhered with an adhesive material for bonding the thin-film battery to the electrical device. The thin-film battery component is used to generate and transmit electrical energy.

[0041] The outer surface of the thin film battery component 30 is provided with the sealing frame 20, and the upper surface of the sealing frame is coated with the anti-sticking film 10;

[0042] It should be noted that the anti-sticking film is used to wrap the sealant frame to prevent the sticky material of the sealant frame from affecting the use. The anti-sticking film is also used to protect the thin film battery components, refer to Figure 1It is easy to understand that the sealing frame only exists at the edge of the thin-film battery, causing the upper surface of the thin-film battery to be exposed, so an anti-sticking film is needed for isolation and protection.

[0043] In a specific implementation, the anti-sticking film can be release paper or a film made by applying silicone oil on PET (polyethylene terephthalate plastic), or other materials with the same function, which is not limited in this embodiment.

[0044] The sealing frame 20 is used to encapsulate the electrolyte in the thin film battery component 30 and to bond the thin film battery and electrical devices.

[0045] In a specific implementation, after removing the release film from the sealant frame, the thin-film battery and the electrical device can be bonded together using the adhesive material on the sealant frame. It should be noted that the electrolyte can be pre-stored in the thin-film battery or added when the thin-film battery is needed by removing the release film.

[0046] The thin film battery component 30 includes a battery substrate 301, a separator 303 and an electrode layer 302;

[0047] The electrode layer 302 is provided on the upper surface of the battery substrate 301. Figure 2 Left) or between the electrode layer 302 and the battery substrate 301 ( Figure 2 Right) is provided with the diaphragm 303.

[0048] It should be noted that the diaphragm is a thin film with a porous structure, which can absorb the electrolyte inside the thin film battery and help the electrolyte to be transported through the pores.

[0049] In a specific implementation, the electrode layer includes: an electrode active material layer 3023, a collector layer 3021 and a conductive adhesive 3022;

[0050] It should be noted that the electrode active material layer can react with the electrolyte inside the thin film battery to generate electrical energy. The collector layer can be used as the tab position of the battery. The collector layer is used to transmit the electrical energy generated by the electrode active material layer to the electrical device. The conductive glue is arranged at the tab position, that is, on the end point or edge of the collector layer, for connecting to the electrical device and transmitting electrical energy.

[0051] In some embodiments, the thin film battery component may further include a battery substrate, a gel electrolyte layer, and an electrode layer. The upper surface of the battery substrate is coated with the electrode layer, and the upper surface of the electrode layer is coated with the gel electrolyte layer.

[0052] It is easy to understand that when the electrolyte is a gel electrolyte, due to its material properties, a diaphragm is not required. The gel electrolyte can be directly coated on the electrode active material layer to allow the two to react and generate electrical energy.

[0053] The electrode active material layer 3023 is disposed on the surface of the collector layer 3021 , and the conductive adhesive 3022 is disposed at the end or edge of the collector layer 3021 .

[0054] It should be noted that, in actual operation, a thin-film battery contains two electrode active material layers and two collector layers, and correspondingly, there are also two conductive adhesives.

[0055] It is easy to understand that batteries have positive and negative electrodes, so two sets of electrode layers can be used to form the positive and negative electrodes respectively. Specifically, the collector layer can be used to form the pole ear position, and then the positive and negative electrodes are formed accordingly to connect with the positive and negative electrodes of the electrical device to form a power supply structure. Of course, the specific positions of the positive and negative electrodes can be at the same end of the two collector layers, or at the front and rear ends of the two collector layers, or other suitable positions. This embodiment does not limit this.

[0056] It should be noted that, in this embodiment, the upper and lower positions of the collector layer and the electrode active material layer can be specifically set according to the internal structure of the thin film battery, and this embodiment does not limit this.

[0057] For ease of understanding, combined Figure 3 Give specific explanations for the above two situations.

[0058] The internal structure of thin film battery can be as follows Figure 3 As shown in the left image, the separator is sequentially coated with a collector layer, a conductive adhesive, and an electrode active material layer, which is then attached to the battery substrate. In this structure, the collector layer and the electrode active material layer are interchangeable. After this interchange, the electrode active material layer is directly coated on the separator. The electrolyte passes through the porous structure of the separator, allowing the electrode active material in the electrode active material layer to react with the electrolyte, generating sufficient electrical energy.

[0059] The internal structure of thin film battery can also be as follows Figure 3 As shown in the figure on the right, the battery substrate is sequentially coated with a collector layer, a conductive adhesive, and an electrode active material layer. A separator is applied to the upper surface of the electrode active material layer. In this structure, the separator's primary function is to contain the electrolyte and prevent leakage during the bonding process. Of course, in this structure, when the electrolyte is a gel electrolyte, the separator can be omitted, achieving the desired effect while saving separator material.

[0060] In the above two structures, the positive and negative electrodes of the battery are arranged in parallel and in the same layer, that is, the positive and negative electrodes are arranged on the battery substrate or on the separator at the same time.

[0061] It is easy to understand that since the sealing frame wraps the entire thin-film battery component, the sealing frame can seal the electrolyte and other battery structures, mainly including the electrode active material layer, the collector layer, the diaphragm, etc. Of course, in the specific implementation, the end of the collector layer can be extended outside the sealing frame directly as the pole ear position, or the sealing frame can seal the entire collector layer, connect the conductive glue to the pole ear position of the collector layer, and extend the conductive glue out of the sealing frame to form a power supply structure with the electrical device.

[0062] In a specific implementation, the internal structure of the thin film battery can also be the following two situations, refer to Figure 4 .

[0063] like Figure 4 In the left figure, the upper surface of the battery substrate 301 is coated with a collector layer 3021, a conductive adhesive 3022 and an electrode active material layer 3023 in sequence. The upper surface of the electrode active material layer 3023 is covered with a separator 303. The upper surface of the separator 303 is coated with a collector layer 3021, a conductive adhesive 3022 and an electrode active material layer 3023 in sequence. Under this structure, the positive and negative electrodes of the thin film battery can be respectively set on the battery substrate or the separator. When observed from the projection, the positive and negative electrodes of the battery do not overlap, and are displayed to the outside as being arranged in parallel. Correspondingly, when the battery structure is in the above-mentioned hierarchical relationship, the positive and negative electrodes of the battery can also be arranged in an overlapping manner. Figure 4 The right picture shows the positive and negative poles of the battery overlapping each other.

[0064] It should be added that, in some embodiments, the electrode active material layer and the collector layer can also be combined. For example, when the electrode active material can serve as both an electrolytic reactant and a conductor, such as a carbon layer, the electrode active material layer and the collector layer can be directly integrated into one.

[0065] In a first embodiment, a flexible, stickable thin-film battery includes a thin-film battery component, a sealing frame, and a release film. The outer surface of the thin-film battery component is provided with the sealing frame, and the upper surface of the sealing frame is coated with the release film. The sealing frame is used to encapsulate the electrolyte in the thin-film battery component and to bond the thin-film battery to the electrical device. With the thin-film battery proposed in this embodiment, after tearing off the release film on the upper surface of the sealing frame, the thin-film battery can be attached and used immediately through the sticky material on the sealing frame, thus avoiding the problems of complex installation and limited usage scenarios of traditional thin-film batteries. The present invention is simple to operate and easy to implement. It can be used in a variety of different scenarios and can also be used on electrical devices of various shapes, greatly improving the user experience.

[0066] Reference Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 9 , Figure 5 This is a schematic diagram of the battery structure of the second embodiment of the flexible, attachable thin-film battery proposed by the present invention. Figure 6 This is a top view of the first battery structure of the second embodiment of the flexible, attachable thin-film battery proposed by the present invention. Figure 7 This is a top view of the second battery structure of the second embodiment of the flexible, attachable thin-film battery proposed by the present invention. Figure 8 This is a schematic diagram of the first appearance of the flexible, stickable thin-film battery according to the second embodiment of the present invention. Figure 9 This is a schematic diagram of the second appearance of the flexible, bondable thin-film battery according to the second embodiment of the present invention.

[0067] Based on the above first embodiment, in order to extend the service life of the thin film battery and improve the storage stability of the battery, the present invention proposes a second embodiment of a flexible, attachable thin film battery.

[0068] To achieve the above objectives, the present invention further provides a flexible thin film battery capable of autonomously adding electrolyte, wherein the thin film battery further comprises an isolation film substrate 40 , and the isolation film substrate 40 is provided on the upper surface of the thin film battery component 30 .

[0069] It should be noted that the isolation film substrate is used to encapsulate the electrolyte added after packaging, so as to protect the electrolyte in the thin film battery from reacting with substances on the surface of the electrical device.

[0070] It is easy to understand that the electrolyte inside the battery and the electrode active material layer will react spontaneously when they come into contact. As a result, when the battery is not in use, the internal reaction will generate electricity, and the generated electricity will be wasted, which will in turn shorten the service life of the battery. Therefore, to solve this problem, this embodiment proposes a method of tearing off the anti-sticking film on the upper surface of the sealing frame when a thin-film battery is needed and adding electrolyte to the inside of the battery.

[0071] It is easy to imagine that when adding electrolyte to the battery structure, the amount of electrolyte added must meet the requirements of the electrode active material layer in the electrode layer. Due to the porosity of the diaphragm structure, it will not block the electrolyte added later. Therefore, it is necessary to set an isolation film base in the middle position of the sealing frame to encapsulate the electrolyte added later.

[0072] In some implementations, an anti-sticking film frame 50 is further provided on the outer surface of the sealant frame 20 .

[0073] It should be noted that, in actual operation, the anti-sticking film can be torn off first to add electrolyte to the battery structure, and then the isolation film base 40 is attached. The isolation film base 40 is attached to the middle position of the sealing frame 20 (such as Figure 6 ), so that it forms a closed structure with the sealing glue frame 20 to seal the electrolyte, but due to the situation that the isolation film base is not attached to the designated position during manual attachment, it may be skewed or not completely attached. Therefore, for ease of use, an anti-sticking film frame 50 (such as Figure 7 ), after adjusting the isolation film base to the specified position, it is only necessary to tear off the anti-sticking film frame 50 of the sealant frame and then paste it for use.

[0074] In some embodiments, the thin film battery component 30 includes a battery substrate 301 , and a through hole is provided on the isolation film substrate 40 or the battery substrate 301 .

[0075] It is easy to understand that when electrolyte needs to be added, it can be done by pre-coating the isolation film base and setting a through hole on the isolation film base as needed, and then injecting the electrolyte into the battery structure through the through hole. After the addition is completed, the through hole can be sealed with a film.

[0076] In a specific implementation, the through hole can be set above the gap between the positive and negative electrodes of the thin film battery. Different shapes of through holes can be set according to different structures inside the battery, for example, Figure 3 In the illustrated structure, since the positive and negative electrodes of the battery are arranged side by side with a gap between them, the through-holes can be configured as elongated strips. When the positive and negative electrodes of the battery do not overlap in the projection direction, the elongated through-holes are preferably located above the gap between the positive and negative electrodes. In some embodiments, the through-holes can also be circular or have other shapes. The specific shape of the through-holes can be determined based on the specific implementation scenario and is not limited to this embodiment.

[0077] It should be noted that in some embodiments, when electrolyte needs to be added, a through hole can be provided on the battery substrate as needed after the isolation film substrate is pre-applied. The specific shape of the through hole on the battery substrate can be various shapes as described above. In particular, when the battery structure is Figure 3 As shown, since there is a gap between the positive and negative electrodes of this structure, a long through hole can preferably be provided on the battery substrate at a position corresponding to the gap.

[0078] In some embodiments, the thin film battery component 30 contains electrolyte solutes.

[0079] It is easy to understand that after adding the electrolyte, when the battery is not needed, the electrolyte remaining in the battery will still cause the electrolysis reaction to continue. Therefore, in order to extend the service life of the thin-film battery, the electrolyte solvent in the electrolyte can be dried to retain only the electrolyte solute. When it is needed, only the corresponding electrolyte solvent needs to be added. In addition, for aqueous electrolyte systems, when electrolyte solutes remain in the battery, water can be added directly. At this time, the electrolyte solutes dissolve in water, forming an electrolyte that can react with the active electrode material layer, which is more conducive to practical application.

[0080] It is easy to understand that after the electrolyte is dried, the remaining electrolyte solute will be encapsulated in the diaphragm. In a specific implementation, the diaphragm and the electrolyte can be heated at the same time. The specific drying method can be set according to the specific implementation scenario, such as infrared radiation heating or vacuum drying, etc. This embodiment does not limit this.

[0081] It should be noted that the flexible thin film battery proposed in the present invention can be specifically shaped according to the appearance characteristics of the specific electrical device, such as a long strip (such as Figure 8 As shown), the shape of the thin film battery 60 proposed in this embodiment is not limited to Figure 8 As shown, it can also be a square or a triangle, etc., which is not limited in this embodiment.

[0082] It should be further added that the flexible thin film battery proposed in the present invention has a certain degree of flexibility. During use, it can be wound or bent according to the shape characteristics of the electrical device, such as Figure 9 As shown, when the electrical device is cylindrical, the thin film battery can be spirally wound and pasted on the cylindrical electrical device to reduce the surface area occupied by the electrical device. Figure 8 and Figure 9 The thin-film battery structure, the battery positive electrode 601 and the battery negative electrode 602 shown are only schematic, and do not mean that the battery positive and negative electrodes of the present invention are limited to the arrangement shown in the figure. In specific implementation, the battery positive and negative electrodes can be specifically arranged according to actual needs, and the present invention does not limit this.

[0083] In a second embodiment, to extend the lifespan of thin-film batteries and improve their storage stability, the present invention proposes a method for efficiently utilizing electrical energy by removing the release film and adding electrolyte. When not in use, the battery is devoid of electrolyte, preventing any reaction and generating electrical energy, thereby protecting the battery's internal structure. This autonomous electrolyte addition method achieves efficient energy utilization, avoiding the waste of electrical energy generated by thin-film batteries when not in use, thereby extending the battery's lifespan and improving user convenience.

[0084] To achieve the above objectives, the present invention further provides an electrical device equipped with the flexible, attachable thin-film battery described above. Because this electrical device utilizes all of the technical solutions of all of the aforementioned embodiments, it possesses at least all of the beneficial effects of the technical solutions of the aforementioned embodiments, and therefore will not be further elaborated upon here.

[0085] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A flexible, adhesive-type thin-film battery, characterized in that: The thin film battery comprises: a thin film battery component, a sealing frame and an anti-sticking film; The outer surface of the thin film battery component is provided with the sealing frame, and the upper surface of the sealing frame is coated with the anti-sticking film; The sealing frame is used to encapsulate the electrolyte in the thin film battery component and to bond the thin film battery and the electrical device; The thin film battery further comprises an isolating film substrate, the upper surface of the thin film battery component is provided with the isolating film substrate, and the isolating film substrate and the sealing frame form a sealing structure for sealing the electrolyte; The thin film battery components include a battery substrate, a separator and an electrode layer; The electrode layer is provided on the upper surface of the battery substrate, and the separator is provided on the upper surface of the electrode layer or between the electrode layer and the battery substrate; The isolation film substrate or the battery substrate is provided with a through hole; the through hole is provided just above the gap between the positive and negative electrodes of the thin film battery; The electrode layer includes: an electrode active material layer, a collector layer and a conductive glue; The electrode active material layer is provided on the surface of the collector layer, and the conductive glue is provided at the end or edge of the collector layer; The upper surface of the battery substrate is coated with a collector layer, a conductive glue and an electrode active material layer in sequence, the upper surface of the electrode active material layer is covered with a diaphragm, and the upper surface of the diaphragm is coated with a collector layer, a conductive glue and an electrode active material layer in sequence, and the projections of the positive and negative electrodes of the thin film battery on the same plane do not overlap.

2. The thin film battery according to claim 1, wherein: The outer surface of the sealant frame is further provided with an anti-sticking film frame.

3. The thin film battery according to claim 1, wherein: Electrolyte solute is encapsulated inside the thin film battery component.

4. The thin film battery according to claim 1-2, characterized in that: The thin film battery component may also include a battery substrate, a gel electrolyte layer and an electrode layer; The upper surface of the battery substrate is coated with the electrode layer, and the upper surface of the electrode layer is provided with the gel electrolyte layer.

5. An electrical device, characterized in that: The electrical device comprises the thin film battery according to any one of claims 1 to 4.

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