A passive electronic tag

Abstract

The utility model discloses an embodiment of passive electronic tag, this passive electronic tag includes: printed circuit board and solar cell panel, printed circuit board includes first surface, second surface and third surface, and first surface and second surface are opposite and set up, and third surface connects first surface and second surface, first surface one side is provided with solar cell panel, and second surface one side is provided with circuit wiring structure, and third surface one side is provided with antenna, solar cell panel and antenna are electrically connected in circuit wiring structure respectively. Adopt above technical scheme, and the antenna and solar cell panel are designed on the different surface of printed circuit board, and the effect that the sustainable energy is fully utilized is considered with the product size is reduced without adding the area or volume.

Description

Technical Field

[0001] This utility model relates to the field of electronic tag technology, and in particular to a passive electronic tag. Background Technology

[0002] In asset management and warehousing logistics, tags are frequently used to manage assets, equipment, or goods in transit. However, many scenarios or equipment not only require tags to be sustainable and powered by sustainable energy to avoid the labor costs of replacing batteries later, but also have size requirements.

[0003] In existing technologies, Bluetooth tags with button batteries are small in size but cannot utilize sustainable energy. Traditional solar-powered passive Bluetooth tags can solve the energy sustainability problem, but because they have solar cells, the Bluetooth antenna cannot be covered by the solar cells. A single circuit board surface needs to simultaneously have non-overlapping solar cell and antenna structures, resulting in a larger product size. Solar-powered passive Bluetooth tags face the challenge of balancing small size and sustainable energy utilization. Utility Model Content

[0004] This utility model provides a passive electronic tag that designs the antenna and solar panel on different surfaces of a printed circuit board, so that the product size can be reduced without adding extra area or volume, while also taking into account the full utilization of sustainable energy.

[0005] This utility model embodiment provides a passive electronic tag, including: a printed circuit board and a solar panel;

[0006] The printed circuit board includes a first surface, a second surface and a third surface, the first surface and the second surface are disposed opposite to each other, and the third surface is connected to the first surface and the second surface;

[0007] A solar panel is provided on one side of the first surface, a circuit wiring structure is provided on one side of the second surface, and an antenna is provided on one side of the third surface; the solar panel and the antenna are electrically connected to the circuit wiring structure respectively.

[0008] Optionally, the area of ​​the solar panel is S1, and the area of ​​the first surface is S2;

[0009] Among them, S1 / S2≥90%.

[0010] Optionally, the printed circuit board further includes at least one conductive hole that penetrates the printed circuit board; the solar panel is electrically connected to the first wiring area of ​​the circuit wiring structure through the conductive hole.

[0011] The antenna is electrically connected to the second wiring area of ​​the circuit wiring structure;

[0012] The first cabling area and the second cabling area are different cabling areas.

[0013] Optionally, the conductive via is disposed at at least one corner of the printed circuit board; the first wiring area is disposed at the corner.

[0014] The second wiring area is located on the side of the second surface closest to the third surface.

[0015] Optionally, the antenna includes a main body and at least one connecting part;

[0016] The main body is located on the third surface, and the connecting part extends along the third surface to the second surface and is electrically connected to the circuit wiring structure.

[0017] Optionally, the printed circuit board may also include a solder resist structure and a silkscreen structure disposed on one side of the first surface;

[0018] The solder resist structure is positioned between the solar panel and the printed circuit board.

[0019] Silkscreen printing is used to identify printed circuit boards.

[0020] Optionally, the passive electronic tag may also include a device structure disposed on the second surface, the device structure being electrically connected to the circuit wiring structure.

[0021] Optionally, the device structure includes an energy harvesting chip and an energy storage element;

[0022] The energy harvesting chip is electrically connected to both the solar panel and the energy storage element, and is used to transfer electrical energy from the solar panel to the energy storage element.

[0023] Optionally, the passive electronic tag also includes a first cover plate located on the side of the solar panel away from the printed circuit board.

[0024] The first cover plate includes a transparent cover plate.

[0025] Optionally, the passive electronic tag also includes a second cover plate located on the side of the printed circuit board away from the solar panel;

[0026] The second cover plate aligns and fits with the first cover plate to form a housing for the printed circuit board and the solar panel.

[0027] The passive electronic tag provided in this embodiment of the invention utilizes a printed circuit board and a solar panel. The solar panel is positioned on a first surface of the printed circuit board, a circuit wiring structure is positioned on a second surface opposite to the first surface, and an antenna is positioned on a third surface connecting the first and second surfaces. The solar panel and antenna are electrically connected to the circuit wiring structure. This technical solution places the antenna and solar panel on different surfaces of the printed circuit board, eliminating the need for additional area or volume. This reduces the size of the passive electronic tag while increasing the usable area of ​​the solar panel. It achieves a balance between the small size of the passive electronic tag and the full utilization of sustainable energy, while also avoiding the impact of the solar panel on the antenna during the use of the passive electronic tag. This solves the problem of balancing small size and sustainable energy utilization in solar-powered passive electronic tags. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of a passive electronic tag provided in an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of another passive electronic tag structure provided in this embodiment of the utility model.

[0030] In the embodiments of this utility model, the reference numerals and corresponding feature names are as follows:

[0031] 10-Solar panel, 20-Printed circuit board, 21-First surface, 22-Second surface, 23-Third surface, 24-Conductive hole, 30-Antenna, 31-Main body, 32-Connecting part, 40-First cover plate, 50-Second cover plate, 210-Solder resist structure, 211-Silicone structure, 221-Circuit wiring structure, 222-Device structure, 223-Energy harvesting chip, 224-Energy storage element. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0033] The terminology used in the embodiments of this utility model is for the purpose of describing specific embodiments only and is not intended to limit the utility model. It should be noted that directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this utility model are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this utility model. Furthermore, in the context, it should be understood that when referring to an element being formed "on" or "below" another element, it can be formed not only directly on or below the other element, but also indirectly on or below it through an intermediate element. The terms "first," "second," etc., are used for descriptive purposes only and do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] Figure 1 This is a schematic diagram of the overall structure of a passive electronic tag provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of another passive electronic tag structure provided by an embodiment of the present invention. This embodiment is applicable to situations where the size of optical passive electronic tags is reduced while also considering sustainable energy utilization. Figure 1 and Figure 2 As shown, the passive electronic tag includes: a printed circuit board 20 and a solar panel 10; the printed circuit board 20 includes a first surface 21, a second surface 22 and a third surface 23, the first surface 21 and the second surface 22 are disposed opposite to each other, and the third surface 23 is connected to the first surface 21 and the second surface 22; a solar panel 10 is disposed on one side of the first surface 21, a circuit wiring structure 221 is disposed on one side of the second surface 22, and an antenna 30 is disposed on one side of the third surface 23; the solar panel 10 and the antenna 30 are electrically connected to the circuit wiring structure 221 respectively.

[0036] In this embodiment of the invention, the passive electronic tag includes a printed circuit board 20 and a solar panel 10. The printed circuit board 20 can be understood as a finished component with specific electrical functions formed by fixing and connecting electronic components such as resistors, chips, and connectors onto a printed circuit board through soldering and assembly processes. The solar panel 10 can be understood as a device capable of converting light energy into electrical energy. Exemplarily, the solar panel 10 includes, but is not limited to, silicon solar panels and amorphous silicon solar panels; this embodiment of the invention does not impose any limitations on this.

[0037] Specifically, the printed circuit board 20 includes a first surface 21, a second surface 22, and a third surface 23. The first surface 21 can be understood as the back wiring surface of the printed circuit board 20, and the solar panel 10 is disposed on one side of the first surface 21. The second surface 22 can be understood as the main signal wiring or component mounting surface of the printed circuit board 20, and a circuit wiring structure 221 is disposed on one side of the second surface 22. The first surface 21 and the second surface 22 are positioned opposite each other. The third surface 23 can be understood as the lateral connection surface of the printed circuit board 20, i.e., the side surface of the printed circuit board 20 in the thickness direction. The third surface 23 is perpendicular to the first surface 21 and the second surface 22, and the third surface 23 connects the first surface 21 and the second surface 22. An antenna 30 is disposed on one side of the third surface 23, and the solar panel 10 and the antenna 30 are electrically connected to the circuit wiring structure 221 disposed on the second surface 22 of the printed circuit board 20.

[0038] The passive electronic tag provided in this embodiment of the invention features a printed circuit board 20 and a solar panel 10. The solar panel 10 is positioned on the first surface 21 of the printed circuit board 20, and a circuit wiring structure 221 is positioned on the second surface 22 opposite to the first surface 21. An antenna 30 is positioned on a third surface 23 connecting the first and second surfaces 22, and the solar panel 10 and the antenna 30 are electrically connected to the circuit wiring structure 221. By designing the antenna 30 and the solar panel 10 on different surfaces of the printed circuit board 20, no additional area or volume is required, reducing the size of the passive electronic tag while increasing the usable area of ​​the solar panel 10. This achieves a balance between the small size of the passive electronic tag and the full utilization of sustainable energy, while also avoiding the impact of the solar panel 10 on the antenna 30 during the use of the passive electronic tag. This solves the problem of balancing small size and sustainable energy utilization in solar-powered passive electronic tags.

[0039] Optional, you can continue to refer to Figure 1 The area of ​​the solar panel 10 is S1, and the area of ​​the first surface 21 is S2; wherein, S1 / S2≥90%.

[0040] Specifically, S1 represents the area of ​​the solar panel 10, and S2 represents the area of ​​the first surface 21. S1 / S2 ≥ 90%, indicating that the area of ​​the solar panel 10 is almost the same as the area of ​​the printed circuit board 20, meaning the solar panel 10 can fully cover the printed circuit board 20. This configuration allows for the full utilization of the solar panel 10, maximizing the area of ​​usable energy without exceeding the size of the passive electronic tag itself. It achieves full utilization of sustainable energy while maintaining the small size of the passive electronic tag, thus increasing its lifespan.

[0041] Furthermore, S1 / S2 can be 91%, 92%, 93%, 94%, 95%, 95.5%, 96%, 97%, 98%, 99%, or even 100%, fully realizing the design of maximizing the area of ​​usable energy.

[0042] Optional, you can continue to refer to Figure 1 and Figure 2 The printed circuit board 20 also includes at least one conductive hole 24, which penetrates the printed circuit board 20; the solar panel 10 is electrically connected to the first wiring area (not shown in the figure) of the circuit wiring structure 221 through the conductive hole 24; the antenna 30 is electrically connected to the second wiring area (not shown in the figure) of the circuit wiring structure 221; the first wiring area and the second wiring area are different wiring areas.

[0043] In this embodiment, the printed circuit board 20 further includes at least one conductive hole 24. The conductive hole 24 can be understood as a through-hole structure formed in the printed circuit board 20 through drilling and metallization, which enables electrical connection and signal transmission between different layers. The conductive hole 24 penetrates through the printed circuit board 20.

[0044] Specifically, the solar panel 10 is electrically connected to the first wiring area of ​​the circuit wiring structure 221 through conductive holes 24. The first wiring area can be understood as a functional area within the circuit wiring structure 221 capable of achieving electrical connection. For example, the first wiring area may be located in the central area or a corner area of ​​the circuit wiring structure 221; this embodiment of the invention does not impose such limitations. The antenna 30 is electrically connected to the second wiring area of ​​the circuit wiring structure 221. The second wiring area can be understood as another functional area within the circuit wiring structure 221 capable of achieving electrical connection. For example, the second wiring area may be located in the edge area of ​​the circuit wiring structure 221; this embodiment of the invention does not impose such limitations. The first wiring area and the second wiring area are different wiring areas.

[0045] The passive electronic tag provided in this embodiment of the invention features a conductive hole 24 penetrating the printed circuit board 20. A solar panel 10 is electrically connected to a first wiring area of ​​a circuit wiring structure 221 via the conductive hole 24, while an antenna 30 is electrically connected to a second wiring area of ​​the circuit wiring structure 221 located at a different position from the first wiring area. By dividing the circuit wiring structure 221 into different areas and setting different connection positions for the solar panel 10 and the antenna 30, the solar panel 10 and the antenna 30 are independently arranged within the same circuit wiring structure 221 and do not interfere with each other, avoiding the influence of the solar panel 10 on the antenna 30 and reducing signal interference. Furthermore, the different connection positions of the solar panel 10 and the antenna 30 allow for flexible wiring of the printed circuit board 20, improving the efficient use of space resources, reducing the size of the passive electronic tag, and solving the problems of unstable signal transmission due to interference and integration difficulties caused by space constraints.

[0046] Optional, you can continue to refer to Figure 1 and Figure 2 Conductive holes 24 are disposed at at least one corner of the printed circuit board 20; a first wiring area is disposed at the corner; and a second wiring area is disposed on the side of the second surface 22 near the third surface 23.

[0047] Specifically, conductive vias 24 are disposed at at least one corner of the printed circuit board 20, and a first wiring region is disposed at the corner. The positive and negative terminals of the solar panel 10 are electrically connected to the first wiring region in the circuit wiring structure 221 of the printed circuit board 20 through the conductive vias 24 on the printed circuit board 20. A second wiring region is disposed on the side of the second surface 22 near the third surface 23, and the antenna 30 located on the third surface 23 can be directly connected to the second wiring region in the circuit wiring structure 221.

[0048] This embodiment of the invention places the conductive hole 24 at the corner of the printed circuit board 20 and correspondingly places the first wiring area at the corner, while placing the second wiring area on the side of the second surface 22 near the third surface 23. By adhering to the principle of proximity, the spatial structure of the printed circuit board 20 is efficiently utilized, reducing the length of the wires connecting the solar panel 10 and antenna 30 to the circuit wiring structure 221, thus reducing line impedance and achieving the effects of reducing power loss and improving energy utilization. This solves the problems of large size, high energy loss during line transmission, and signal delay in passive electronic tag design caused by unreasonable space utilization.

[0049] Optional, you can continue to refer to Figure 2The antenna 30 includes a main body portion 31 and at least one connecting portion 32; the main body portion 31 is disposed on the third surface 23, and the connecting portion 32 extends along the third surface 23 to the second surface 22 and is electrically connected to the circuit wiring structure 221.

[0050] In this embodiment, the antenna 30 includes a main body 31 and at least one connecting part 32. The main body 31 can be understood as the core structure for the antenna 30 to achieve signal transmission and reception, and the connecting part 32 can be understood as a structural unit that enables electrical connection between the antenna 30 and the circuit wiring structure 221. For example, the connecting part 32 may include, but is not limited to, metal pins; this embodiment of the invention does not impose such limitations. Specifically, the main body 31 is disposed on the third surface 23, and the main body 31 and the connecting part 32 form an integrated structure. The connecting part 32 extends along the third surface 23 to the second surface 22 and is electrically connected to the circuit wiring structure 221 through a predetermined method.

[0051] The passive electronic tag provided in this embodiment of the invention achieves rapid positioning and connection between the antenna 30 and the printed circuit board 20 by electrically connecting the antenna 30 to the circuit wiring structure 221 through the connecting part 32 of the antenna 30, thereby enhancing the connection stability between the antenna 30 and the circuit wiring structure 221. Furthermore, the main body 31 of the antenna 30 and the connecting part 32 are integrally connected, reducing signal transmission loss, improving communication stability, and avoiding signal interference problems inherent in split structures.

[0052] Optional, you can continue to refer to Figure 2 The printed circuit board 20 also includes a solder resist structure 210 and a silkscreen structure 211 disposed on one side of the first surface 21; the solder resist structure 210 is disposed between the solar panel 10 and the printed circuit board 20; the silkscreen structure 211 is used to identify the printed circuit board 20.

[0053] In this embodiment, the printed circuit board 20 further includes a solder resist structure 210 and a silkscreen structure 211 disposed on one side of the first surface 21. The solder resist structure 210 can be understood as a protective layer coated on the surface of the printed circuit board 20, which can be used to prevent short circuits during soldering, protect the circuit structure, and prevent it from oxidation and corrosion. Exemplarily, the solder resist structure 210 includes, but is not limited to, a liquid photosensitive solder resist curing layer; this embodiment of the present invention does not impose limitations on this. The silkscreen structure 211 can be understood as text and symbols printed on the printed circuit board 20, used to identify components, polarity, and version information to assist in the assembly and maintenance of the printed circuit board 20.

[0054] Specifically, the solder resist structure 210 is disposed between the solar panel 10 and the printed circuit board 20. By precisely controlling the thickness of the solder resist structure 210, it is adapted to the connection process between the solar panel 10 and the printed circuit board 20, preventing external moisture and dust from entering, protecting the connection between the electrodes of the solar panel 10 and the circuit wiring structure 221 of the printed circuit board 20, and extending the service life of the passive electronic tag. The silkscreen structure 211 is used to identify the printed circuit board 20, marking the core parameters and information of the printed circuit board 20, facilitating quick identification during quality inspection and maintenance. For example, the core parameters and information of the printed circuit board 20 include, but are not limited to, product model and production batch information.

[0055] This utility model provides a passive electronic tag. By setting a solder resist structure 210 on the printed circuit board 20, it ensures precise conductivity between the electrodes of the solar panel 10 and the circuit wiring structure 221, while preventing short circuits between the electrodes and other wiring on the printed circuit board 20, thus protecting the printed circuit board 20 and extending the product's lifespan. By setting a silkscreen structure 211 on the printed circuit board 20 to print positioning reference lines and component mounting marks, it assists in quickly aligning the solar panel 10 and antenna 30 components during production, improving production efficiency.

[0056] Optional, you can continue to refer to Figure 2 The passive electronic tag also includes a device structure 222 disposed on the second surface 22, which is electrically connected to the circuit wiring structure 221.

[0057] In this embodiment, the passive electronic tag also includes a device structure 222 disposed on the second surface 22. The device structure 222 can be understood as an overall structure composed of multiple functional components arranged and connected in a preset spatial layout. Specifically, the device structure 222 is mounted on the printed circuit board 20 using surface mount technology, and the device structure 222 is electrically connected to the circuit wiring structure 221. Exemplarily, the device structure 222 includes, but is not limited to, a Bluetooth chip, a crystal oscillator, and an electrostatic discharge device. The Bluetooth chip is used to realize short-range wireless communication, completing signal transmission and command interaction between devices; the crystal oscillator is used to provide a precise and stable clock signal frequency for electronic devices; and the electrostatic discharge device is used to suppress damage caused by electrostatic discharge to the device when it is subjected to electrostatic shock.

[0058] This embodiment of the invention provides a device structure 222 on the second surface 22 of the printed circuit board 20, and the device structure 222 is electrically connected to the circuit wiring structure 221. Each device is internally interconnected through the circuit wiring structure 221, improving space utilization while reducing layout complexity and simplifying the system architecture. The device structure 222 is powered by a solar panel 10, enabling the electronic tag to perform specific functions passively.

[0059] Optional, you can continue to refer to Figure 2 The device structure 222 includes an energy harvesting chip 223 and an energy storage element 224. The energy harvesting chip 223 is electrically connected to the solar panel 10 and the energy storage element 224 respectively, and is used to transmit the electrical energy of the solar panel 10 to the energy storage element 224.

[0060] In this embodiment, the device structure 222 includes an energy harvesting chip 223 and an energy storage element 224. The energy harvesting chip 223 can be understood as an integrated structure for capturing, converting, and regulating environmental energy, and converting it into stable and usable electrical energy. The energy storage element 224 can be understood as an electronic component capable of storing electrical energy and releasing it when needed. For example, the energy storage element 224 includes, but is not limited to, a supercapacitor, and this embodiment of the present invention does not impose any limitations on this.

[0061] Specifically, the energy harvesting chip 223 is electrically connected to the solar panel 10 and the energy storage element 224. After being exposed to sunlight, the solar panel 10 converts the acquired energy into electrical energy and transmits it to the energy harvesting chip 224. The energy harvesting chip 224 collects and transmits the electrical energy converted by the solar panel 10 to the energy storage element 224. The energy storage element 224 stores the energy and releases the stored electrical energy to power the passive electronic tag when it is in operation.

[0062] For example, during the day when there is sufficient sunlight, the energy harvesting chip 223 converts solar energy into stable electrical energy, part of which powers the electronic tag and the other part is transmitted to the energy storage element 224 to charge the energy storage element. At night or on cloudy or rainy days when there is insufficient sunlight, the energy storage element 224 automatically discharges to continuously power the load and prevents the passive electronic tag from suddenly interrupting its operation.

[0063] This embodiment of the invention incorporates an energy harvesting chip 223 and an energy storage element 224 in the device structure 222. The energy harvesting chip 223 is connected to the solar panel 10 and the energy storage element 224, collecting the electrical energy converted by the solar panel 10 and transmitting it to the energy storage element 224. Excess electrical energy is stored when the energy source is sufficient, and released when the energy source is interrupted or insufficient, ensuring the operation of the passive electronic tag and improving power supply stability. This solves the problem of unstable operation and sudden interruption of passive electronic tags due to insufficient power supply.

[0064] Optional, you can continue to refer to Figure 1 The passive electronic tag also includes a first cover plate 40, which is located on the side of the solar panel 10 away from the printed circuit board 20; the first cover plate 40 includes a transparent cover plate.

[0065] In this embodiment, the passive electronic tag also includes a first cover plate 40. The first cover plate 40 can be understood as a protective structure located on the outermost layer of the passive electronic tag. The first cover plate 40 is typically made of insulating, lightweight, and corrosion-resistant materials, providing physical protection and structural support for the functional components inside the passive electronic tag.

[0066] Specifically, the first cover plate 40 is located on the side of the solar panel 10 away from the printed circuit board 20, and the area of ​​the first cover plate 40 can completely cover the solar panel 10 to ensure the stability of the internal components. The first cover plate 40 includes a transparent cover plate, which includes, but is not limited to, a transparent lens; this embodiment of the invention does not limit this. Light enters the solar panel 10 through the transparent cover plate, thereby converting light energy into usable electrical energy for use by the passive electronic tag.

[0067] This embodiment of the invention provides a transparent cover plate on the side of the solar panel 10 furthest from the printed circuit board 20, blocking external moisture and impacts, thus protecting the functional components such as the solar panel 10 and the printed circuit board 20 inside the label and preventing damage to these components. Simultaneously, the transparent cover plate design improves light transmittance, allowing the solar panel 10 located inside the cover plate to fully receive sunlight, efficiently capture light energy and convert it into electrical energy, preventing the inability to obtain light energy. This solves the problem of traditional non-transparent cover plates where the encapsulation protection and energy harvesting cannot be simultaneously achieved, leading to the solar panel 10 malfunctioning.

[0068] Optional, you can continue to refer to Figure 1 The passive electronic tag also includes a second cover plate 50, which is located on the side of the printed circuit board 20 away from the solar panel 10; the second cover plate 50 and the first cover plate 40 are aligned and fitted together to form a housing for the printed circuit board 20 and the solar panel 10.

[0069] In this embodiment of the invention, the passive electronic tag further includes a second cover plate 50. The second cover plate 50 can be understood as another protective structure located on the outermost layer of the passive electronic tag, used to provide physical protection and structural support for the functional components inside the passive electronic tag.

[0070] Specifically, the second cover plate 50 is located on the side of the printed circuit board 20 away from the solar cell panel 10, and the structure of the second cover plate 50 is adapted to the structure of the first cover plate 40. The second cover plate 50 and the first cover plate 40 can be joined together to form a housing for the printed circuit board 20 and the solar cell panel 10 through alignment. Exemplary methods for joining the second cover plate 20 and the first cover plate 10 include, but are not limited to, joining methods using screws, snaps, or ultrasonic welding. This embodiment of the present invention does not limit these methods.

[0071] For example, the assembly structure of the passive electronic tag consists of a first cover plate 40, a solar panel 10, a printed circuit board 20, and a second cover plate 50. After the first cover plate 40 and the second cover plate 50 are snapped together, the printed circuit board 20 and the solar panel 10 are housed inside, forming the overall structure of the passive electronic tag.

[0072] The passive electronic tag provided in this embodiment of the invention features a second cover plate 50 that is structurally compatible with the first cover plate 40, and the second cover plate 50 is located on the side of the printed circuit board 20 away from the solar panel 10. The alignment and cooperation of the second cover plate 50 and the first cover plate 40 form a housing for the printed circuit board 20 and the solar panel 10, integrating them inside the housing. This improves the overall compactness of the passive electronic tag structure and facilitates miniaturization. The enclosed housing structure blocks external impacts, preventing damage to the solar panel 10 and the printed circuit board 20, ensuring the passive electronic tag meets protection requirements, and extending its service life. This solves the problems of excessively large size due to low integration and short service life due to lack of protection in passive electronic tags.

[0073] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A passive electronic tag, characterized in that, include: Printed circuit boards and solar panels; The printed circuit board includes a first surface, a second surface, and a third surface, wherein the first surface and the second surface are disposed opposite to each other, and the third surface is connected to the first surface and the second surface; The solar panel is disposed on one side of the first surface, the circuit wiring structure is disposed on one side of the second surface, and the antenna is disposed on one side of the third surface; the solar panel and the antenna are electrically connected to the circuit wiring structure respectively.

2. The passive electronic tag according to claim 1, characterized in that, The area of ​​the solar panel is S1, and the area of ​​the first surface is S2; Among them, S1 / S2≥90%.

3. The passive electronic tag according to claim 1, characterized in that, The printed circuit board further includes at least one conductive hole that penetrates the printed circuit board; the solar panel is electrically connected to the first wiring area of ​​the circuit wiring structure through the conductive hole. The antenna is electrically connected to the second wiring area of ​​the circuit wiring structure; The first wiring area and the second wiring area are different wiring areas.

4. The passive electronic tag according to claim 3, characterized in that, The conductive hole is disposed at at least one corner of the printed circuit board; the first wiring area is disposed at the corner. The second wiring area is located on the side of the second surface close to the third surface.

5. The passive electronic tag according to claim 1, characterized in that, The antenna includes a main body and at least one connecting part; The main body is disposed on the third surface, and the connecting portion extends along the third surface to the second surface and is electrically connected to the circuit wiring structure.

6. The passive electronic tag according to claim 1, characterized in that, The printed circuit board also includes a solder resist structure and a silkscreen structure disposed on one side of the first surface. The solder resist structure is disposed between the solar panel and the printed circuit board; The screen printing structure is used to identify the printed circuit board.

7. The passive electronic tag according to claim 1, characterized in that, The passive electronic tag also includes a device structure disposed on the second surface, the device structure being electrically connected to the circuit wiring structure.

8. The passive electronic tag according to claim 7, characterized in that, The device structure includes an energy harvesting chip and an energy storage element; The energy harvesting chip is electrically connected to both the solar panel and the energy storage element, and is used to transmit electrical energy from the solar panel to the energy storage element.

9. The passive electronic tag according to claim 1, characterized in that, The passive electronic tag also includes a first cover plate, which is located on the side of the solar panel away from the printed circuit board. The first cover plate includes a transparent cover plate.

10. The passive electronic tag according to claim 9, characterized in that, The passive electronic tag also includes a second cover plate, which is located on the side of the printed circuit board away from the solar cell panel; The second cover plate and the first cover plate are aligned and fitted together to form a housing for the printed circuit board and the solar panel.

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