Electronic tag

Abstract

The utility model discloses an electronic tag, which comprises a thermoelectric module, an energy storage module, a power management module, a control module and an electronic screen, the thermoelectric module is connected with the energy storage module through the power management module; the energy storage module is connected with the control module through the power management module; the control module is connected with the electronic screen; the power management module is used for charging the energy storage module by using electric energy generated by the thermoelectric module, and the energy storage module is also used for supplying power to the control module through the power management module; the electronic screen is used for displaying data sent by the control module.

Description

Technical Field

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

[0002] The main challenge currently facing electronic shelf label technology is achieving stable operation over extremely long periods. Most existing technologies rely on ambient light charging or ultra-low power designs to extend battery life, but these solutions exhibit significant limitations in low-light environments, requiring battery replacements for some products, increasing maintenance costs and operational complexity. Furthermore, some technologies attempt to utilize radio frequency energy harvesting or rail-mounted charging, but these are inefficient, costly, and difficult to widely adopt.

[0003] Existing technologies and solutions for electronic shelf labels that offer low power consumption and high sustainability mainly include: ambient light charging, ultra-low power design, RF energy harvesting, traditional wireless charging, and rail charging. The main problems with these technologies include: strong dependence on sunlight, complex integration of optoelectronic components, limited energy conversion efficiency, increased cost, complex installation and maintenance, and high deployment costs. Utility Model Content

[0004] This invention provides an electronic tag to improve the environmental adaptability and energy utilization efficiency of the electronic tag, while simplifying the design and manufacturing difficulty of the electronic tag.

[0005] This utility model embodiment provides an electronic tag, including: a thermoelectric module, an energy storage module, a power management module, a control module, and an electronic screen;

[0006] The thermoelectric module is connected to the energy storage module through the power management module;

[0007] The energy storage module is connected to the control module through the power management module;

[0008] The control module is connected to the electronic screen;

[0009] The power management module is used to charge the energy storage module using the electrical energy generated by the thermoelectric module, and the energy storage module is also used to supply power to the control module through the power management module.

[0010] The electronic screen is used to display the data sent by the control module.

[0011] Furthermore, it also includes a housing, which is used for assembling and fixing the thermoelectric module, energy storage module, power management module, control module, and electronic screen.

[0012] Furthermore, the thermoelectric module includes a first heat-conducting plate, a second heat-conducting plate, and a thermoelectric array;

[0013] The first heat-conducting plate and the second heat-conducting plate are connected to the thermoelectric array, and the thermoelectric array is connected to the power management module through positive and negative contacts;

[0014] The first heat-conducting plate and the second heat-conducting plate are respectively disposed at the first position and the second position of the shell.

[0015] Furthermore, the first heat-conducting plate is disposed on the first outer surface of the housing, and the second heat-conducting plate is disposed on the second outer surface of the housing;

[0016] The first outer surface and the second outer surface are parallel to each other.

[0017] Furthermore, the first heat-conducting plate is disposed on the first inner surface of the housing, and the second heat-conducting plate is disposed on the second inner surface of the housing;

[0018] The first heat-conducting plate is provided with a first contact point, which passes through the housing and is placed on the first outer surface of the housing. The second heat-conducting plate is provided with a second contact point, which passes through the housing and is placed on the second outer surface of the housing. The first contact point and the second contact point are used to directly contact the environment.

[0019] The first inner surface and the second inner surface are parallel to each other.

[0020] Furthermore, the first heat-conducting plate is welded to the thermoelectric array, and the second heat-conducting plate is in contact with the thermoelectric array.

[0021] Furthermore, the electronic screen is connected to the control module via a ribbon cable socket.

[0022] Furthermore, the housing is also equipped with a fixing component for fixing the electronic tag in a designated position.

[0023] Furthermore, it also includes a temperature sensor, which is connected to the control module and is used for temperature measurement of the thermoelectric module.

[0024] Furthermore, the first heat-conducting plate and the second heat-conducting plate are made of metal plates, ceramics, or graphite sheets.

[0025] Compared with existing technologies, the beneficial effects of this invention are as follows: This utility model proposes an electronic tag, which includes a thermoelectric module, an energy storage module, a power management module, a control module, and an electronic screen. The thermoelectric module is designed based on the Seebeck effect, and can utilize the temperature difference in the environment to power the various electrical components within the electronic tag, making the electronic tag particularly suitable for scenarios such as freezers, hot cabinets, outdoor environments, and air conditioning vents. Based on the thermoelectric module's conversion of temperature difference into electrical energy for the electronic tag, the electronic tag proposed in this solution can significantly improve environmental adaptability and energy utilization efficiency in the environment. Attached Figure Description

[0026] Figure 1 This is a block diagram of the electronic tag structure in the embodiment;

[0027] Figure 2 This is another electronic tag structure block diagram in the embodiment;

[0028] Figure 3 This is a schematic diagram of the electronic tag structure in the embodiment;

[0029] Figure 4 This is a schematic diagram of another electronic tag structure in the embodiment;

[0030] Figure 5 This is a schematic diagram of the inner side of the first housing in the embodiment;

[0031] Figure 6 This is a schematic diagram of the first housing from the outside in the embodiment;

[0032] Figure 7 This is a schematic diagram of the inner side of the second housing in the embodiment;

[0033] Figure 8 This is a schematic diagram of the second housing from the outside in the embodiment;

[0034] Figure 9 This is a schematic diagram of another electronic tag structure in the embodiments. Detailed Implementation

[0035] 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.

[0036] Figure 1 This is a block diagram of the electronic tag structure in the embodiment, for reference. Figure 1 This solution proposes an electronic tag, which includes a thermoelectric module 100, an energy storage module 200, a power management module 300, a control module 400, and an electronic screen 500.

[0037] In this scheme, the thermoelectric module 100 is connected to the energy storage module 200 through the power management module 300; the energy storage module 200 is connected to the control module 400 through the power management module 300; and the control module 400 is connected to the electronic screen 500.

[0038] In this scheme, the power management module 300 is used to charge the energy storage module 200 using the electrical energy generated by the thermoelectric module 100, and the energy storage module 200 is also used to supply power to the control module 400 through the power management module 300; the electronic screen 500 is used to display the data sent by the control module 400.

[0039] For example, in this solution, the thermoelectric module 100 is designed based on the Becquerel effect. The Becquerel effect refers to the phenomenon that in a circuit composed of two different conductors, if the temperatures of the two contacts are different, a thermoelectric current will appear in the circuit. The corresponding electromotive force is called the thermoelectric potential, and the direction of the thermoelectric potential depends on the direction of the temperature gradient.

[0040] Specifically, when two different conductors or semiconductors are connected to form a closed loop, and the two contact points of the loop are at different temperatures, the charge carriers at the hot end (which may be electrons or holes in a semiconductor) will gain more energy due to the higher temperature and thus diffuse towards the cold end. This directional movement of charge carriers creates a current in the loop and generates a voltage difference across the conductor or semiconductor. The voltage generated by the Bessack effect is typically between a few microvolts and a few millivolts.

[0041] For example, in this solution, the thermoelectric module 100 may include a semiconductor circuit, a current guide plate, an insulating substrate, a hot end face, and a cold end face;

[0042] The semiconductor circuit consists of a large number of P-type and N-type semiconductors. P-type semiconductors contain a large number of holes as charge carriers, while N-type semiconductors contain a large number of electrons as charge carriers. These two types of semiconductor materials are arranged alternately and connected by electrodes.

[0043] Current guides are used to connect P-type and N-type semiconductor elements, and play a role in conducting electricity, allowing current to flow smoothly between semiconductor elements. Current guides are usually made of metal materials with good conductivity.

[0044] The insulating substrate is located on both sides of the semiconductor circuit and the current-conducting plate, and plays the role of insulation and support to prevent current leakage to the external environment. Common insulating substrate materials include ceramics and epoxy resins.

[0045] The hot end and the cold end are the two contact surfaces of the thermoelectric module. The hot end is used to absorb heat, and the cold end is used to release heat.

[0046] For example, in this solution, the working principle of the thermoelectric module 100 is as follows:

[0047] When heat is applied to the hot end of the thermoelectric module, the temperature of the hot end rises, allowing holes in the P-type semiconductor and electrons in the N-type semiconductor to gain more energy. Due to the temperature difference between the hot and cold ends, charge carriers from the hot end diffuse towards the cold end.

[0048] Holes move toward the cold end, and electrons move in the opposite direction, thus forming an electric current. In a circuit, the flow of current leads to the generation of electrical energy, and at the same time, a voltage difference is formed in the semiconductor circuit to meet the specified application requirements.

[0049] For example, in this solution, the form of the energy storage module 200 is not limited. The energy storage module 200 can be a (lithium) battery or a supercapacitor, etc.

[0050] Using supercapacitors to replace or assist batteries enables rapid energy storage and release. Supercapacitors offer advantages such as high power density and fast charging / discharging, making them ideal for handling intermittent energy supply. This frees up more space for thermoelectric modules, allowing for the generation of more electrical energy through the installation of more thermoelectric modules.

[0051] For example, in this solution, the power management module 300 includes a charging and discharging circuit and a control chip, wherein the thermoelectric module 100 is configured as the power output terminal of the charging and discharging circuit, and the control chip is configured to control the charging and discharging circuit.

[0052] For example, in this solution, there is no limitation on the model of the control chip used. For example, the model of the control chip can be IP3102, DW01, LP7852B6F, etc.

[0053] For example, in this solution, based on the selection of the control chip, the power management module 300 can have the following functions:

[0054] The power management module needs to adjust and adapt the electrical energy output by the thermoelectric module to meet the charging requirements, such as stabilizing the charging voltage within the rated charging voltage range and controlling the charging current within the electrical safety charging current range.

[0055] The charging process is managed and controlled, including monitoring the battery's charging and discharging status (such as battery voltage, current, temperature, and other parameters), and implementing overcharge protection, over-discharge protection, and short-circuit protection.

[0056] For example, in this solution, the specific circuit structure of the charging and discharging circuit configured in the power management module 300 is not limited, and it can be designed with reference to the typical peripheral circuit of the selected control chip.

[0057] For example, in this solution, the control module 400 is used to drive the electronic screen 500, and to realize data reception and transmission of the electronic screen 500, power consumption management of the electronic screen 500, etc.

[0058] For example, in this solution, the electronic tag should be usable in the following scenarios:

[0059] Electronic tags can be installed on the outer surface of freezers or hot cabinets. There is usually a significant temperature difference between the inside and outside of these freezers or hot cabinets; by utilizing this temperature difference, the electronic tag (thermoelectric module) can continuously draw power. This application is particularly suitable for supermarkets and convenience stores in the food retail industry, where the electronic display screen of the tag is used to identify the price and information of frozen foods or hot drinks and meals.

[0060] Electronic tags can be used in outdoor settings, such as toll signs, advertising signs, or product labels in farmers' markets. During the day, sunlight causes a temperature difference in the thermoelectric module of the electronic tag, generating electricity to power the device.

[0061] Near air conditioning vents, ventilation systems, or exhaust fans, electronic tags can be charged using the temperature difference created by airflow. This scenario is suitable for equipment tags in indoor temperature control systems or industrial production environments.

[0062] Electronic tags can be used to identify goods in high- or low-temperature facilities, such as water heaters, cold storage facilities, or in cold chain transportation. These environments typically have significant temperature differences.

[0063] This embodiment proposes an electronic tag comprising a thermoelectric module, an energy storage module, a power management module, a control module, and an electronic display. The thermoelectric module, designed based on the Seebeck effect, utilizes environmental temperature differences to power the various electrical components within the electronic tag, making it particularly suitable for scenarios such as freezers, hot cabinets, outdoor environments, and air conditioning vents. By converting temperature differences into electrical energy for the electronic tag, this proposed solution significantly improves environmental adaptability and energy utilization efficiency.

[0064] Experiments have shown that, using the electronic tag structure of this solution, in an environment with a typical temperature difference of 30°C, the thermoelectric effect module can generate a current of about 1.2 mA, which is sufficient to maintain the basic functions of the electronic tag. This enables the electronic tag to have a longer service life and lower maintenance requirements. The electronic tag proposed in this solution provides an efficient and low-cost solution that is suitable for widespread application in retail, industrial and outdoor fields.

[0065] exist Figure 1 Based on the scheme shown, in one possible implementation, the electronic tag also includes a housing for assembling and fixing the thermoelectric module, energy storage module, power management module, control module, and electronic screen.

[0066] For example, in this solution, the thermoelectric module 100, energy storage module 200, power supply module 300, control module 400 and electronic screen 500 are integrated together based on the housing to form a structurally sealed electronic tag.

[0067] In this solution, the positions of the above modules can be set according to requirements. For example, the hot and cold ends of the thermoelectric module 100 can be set on the outside of the housing, while the energy storage module 200, power module management 300, control module 400, electronic screen 500, and electronic circuit part of the thermoelectric module 100 can be set inside the housing.

[0068] For example, in this solution, the electronic tag can be encapsulated into a sealed whole by the shell, thereby meeting the specified usage requirements.

[0069] Figure 2 This is another electronic tag structure block diagram in the embodiment, see reference. Figure 2 ,exist Figure 1 Based on the scheme shown, in one possible implementation, the thermoelectric module includes a first heat-conducting plate 101-1, a second heat-conducting plate 101-2, and a thermoelectric array 102;

[0070] The first heat-conducting plate and the second heat-conducting plate are connected to the thermoelectric array. The thermoelectric array is connected to the power management module 300 through the positive contact (thermoelectric module contact +) and the negative contact (thermoelectric module contact -).

[0071] The first heat-conducting plate 101-1 and the second heat-conducting plate 101-2 are respectively disposed at the first position and the second position of the shell.

[0072] exist Figure 1 Based on the scheme shown, in this scheme, the thermoelectric array is a semiconductor circuit composed of a large number of P-type semiconductors and N-type semiconductors.

[0073] For example, in this solution, the electronic tag can be configured with multiple sets of first heat-conducting plates, second heat-conducting plates, and thermoelectric arrays. For instance, this solution includes two thermoelectric modules: one includes a first heat-conducting plate 101-1-1, a second heat-conducting plate 101-1-2, and a thermoelectric array 102-1; the other includes a first heat-conducting plate 101-2-1, a second heat-conducting plate 101-2-2, and a thermoelectric array 102-2.

[0074] In this solution, multiple thermoelectric modules are used in parallel with the power management module 300. By connecting multiple thermoelectric modules in parallel, the output voltage or current can be increased to meet the specified application requirements.

[0075] For example, in this solution, the specific materials of the first heat-conducting plate and the second heat-conducting plate are not limited. The heat-conducting plates can be made of metal, high thermal conductivity materials, etc.

[0076] Ceramic materials, such as aluminum nitride (AlN) and silicon carbide (SiC), can also be used. Ceramic materials have high thermal conductivity and are lighter and more corrosion-resistant than metal materials. They can be used in special environments or where electrical insulation is required.

[0077] Graphite sheets can also be used. Graphite sheets have excellent thermal conductivity, especially in the transverse (planar) direction. Graphite sheets can be used as a lightweight heat-conducting material and are widely used in the heat dissipation design of electronic devices.

[0078] exist Figure 2 Based on the scheme shown, in one possible implementation, the first heat-conducting plate is welded to the thermoelectric array, and the second heat-conducting plate is in contact with the thermoelectric array.

[0079] For example, in this solution, a heat-conducting plate is connected to the thermoelectric array by contact, which can meet the needs of maintenance or upgrade to a certain extent.

[0080] Specifically, the outer casing and heat-conducting plate can be designed as detachable components, allowing for quick replacement or repair of core components without damaging the overall structure of the electronic tag.

[0081] Based on any of the aforementioned solutions, in one possible implementation, the control module includes a wireless communication unit, which may include LoRa, BLE, or NB-IoT.

[0082] For example, in this solution, based on the wireless communication unit, the signals in the control module (such as product information, product prices, etc.) can be updated through wireless transmission, thereby enabling the electronic screen to display the latest information.

[0083] Figure 3 This is a schematic diagram of the electronic tag structure in the embodiment. Figure 4 This is a schematic diagram of another electronic tag structure in the embodiment, see reference. Figure 3 and Figure 4 ,exist Figure 2 Based on the scheme shown, in one possible implementation, the housing includes a first housing 11 and a second housing 12, the first housing 11 and the second housing 12 forming a sealed space;

[0084] The first heat-conducting plate 101-1 is disposed on the first housing 11, and the second heat-conducting plate 101-2 is disposed on the second housing 12. When the first housing 11 and the second housing 12 are assembled, the first heat-conducting plate 101-1 and the second heat-conducting plate 101-2 are positioned opposite each other and spatially isolated.

[0085] For example, in this solution, the first heat-conducting plate 101-1 is disposed on the first outer surface of the shell, and the second heat-conducting plate 101-2 is disposed on the second outer surface of the shell; the first outer surface and the second outer surface are parallel to each other.

[0086] For example, in this solution, when the electronic tag is in use in real time, the first heat-conducting plate 101-1 or the second heat-conducting plate 101-2 set on the outer surface of the shell can directly contact the cold or hot surface in the environment, thereby enabling the thermoelectric module to generate electricity using the temperature difference in the environment.

[0087] For example, in this solution, exposing the heat-conducting plate entirely on the outside of the housing can increase the base area of ​​the heat-conducting plate with the cold or hot surface in the environment, allowing the heat-conducting plate to come into contact with the external heat source over a larger area, thereby obtaining more temperature difference and improving the efficiency of energy collection. In addition, the direct exposure of the heat-conducting plate to the outside can transfer external heat to the thermoelectric conversion device more quickly.

[0088] By placing the heat-conducting plate on the outer surface, the temperature gradient across the thermoelectric conversion device can be better controlled. A larger temperature gradient is beneficial for improving the power generation efficiency of the thermoelectric effect, thus enabling the electronic tag to acquire electrical energy more stably.

[0089] The internal space of electronic tags is usually limited. Placing the heat-conducting plate on the outer surface can avoid taking up internal space and provide more space for the installation and layout of other electronic components, which can make the design of electronic tags more compact.

[0090] The heat-conducting plate on the outer surface can be flexibly designed and installed according to the shape and size of the electronic tag, without being limited by the internal structure. Whether it is a flat or curved electronic tag, efficient thermoelectric conversion can be achieved through the proper design of the heat-conducting plate on the outer surface.

[0091] For example, in this solution, the first housing 11 and the second housing 12 are connected together by a "snap-on connection" or a "press-on fastening connection" to form a relatively sealed space. This connection method has the characteristics of being relatively convenient to install and disassemble and having a firm connection.

[0092] For example, in this solution, the housing design incorporates waterproof and dustproof features to ensure that the equipment can still work stably in harsh environments and extend its service life.

[0093] In this solution, a rubber sealing ring can be installed at the joint of the shell to ensure that water cannot seep into the internal circuit, or an annular waterproof groove can be designed at the edge of the shell, in conjunction with a waterproof strip, to enhance the waterproof capability of the electronic tag. Alternatively, the shell of the electronic tag can be made of high-strength waterproof materials, such as waterproof plastic or silicone, or a waterproof coating can be applied to the surface of the electronic tag shell to increase the waterproof performance of the shell, while also improving its corrosion resistance and wear resistance.

[0094] Figure 5 This is a schematic diagram of the inner side of the first housing in the embodiment. Figure 6 This is a schematic diagram of the first housing from the outside in the embodiment. Figure 7 This is a schematic diagram of the inner side of the second housing in the embodiment. Figure 8 This is a schematic diagram of the second housing from the outside of the embodiment, for reference. Figures 5-8 ,relatively Figure 3 and Figure 4 In one possible implementation of the scheme shown, a first heat-conducting plate 101-1 is disposed on the first inner surface of the housing, and a second heat-conducting plate 101-2 is disposed on the second inner surface of the housing, with the first inner surface and the second inner surface being parallel to each other.

[0095] The first heat-conducting plate 101-1 is provided with a first contact point, which passes through the housing and is placed on the first outer surface of the housing. The second heat-conducting plate 101-2 is provided with a second contact point, which passes through the housing and is placed on the second outer surface of the housing. The first contact point and the second contact point are used to directly contact the environment.

[0096] For example, in this solution, the heat-conducting plate is installed inside the housing. When the electronic tag is in use in real time, the heat-conducting plate is brought into contact with the cold and hot surfaces in the environment through the contact points, thereby enabling the thermoelectric module to generate electricity using the temperature difference in the environment.

[0097] For example, in this solution, the electronic tag may be subject to collisions, friction and other situations during use. The internal heat-conducting plate can be protected by the electronic tag shell to avoid damage due to direct external force, thereby ensuring the stability and reliability of the thermoelectric conversion device.

[0098] By placing the heat-conducting plate on the inner surface, the heat-conducting plate can be prevented from being directly exposed to the external environment, reducing corrosion from dust, moisture, chemicals, etc., and improving the adaptability and service life of electronic tags in harsh environments.

[0099] The heat-conducting plate on the inner surface is closer to the thermoelectric conversion element inside the electronic tag, resulting in a shorter heat transfer path and reduced heat loss during the transfer process.

[0100] By placing the heat-conducting plate on the inner surface, the outer surface of the electronic tag can be made of various materials and colors, such as plastic, paper, and cloth, to meet different design requirements. When using electronic tags on the casing of electronic products, the design of the heat-conducting plate on the inner surface can make the electronic tag consistent with the overall design style of the electronic product, enhancing the overall aesthetics of the product.

[0101] Based on any of the aforementioned solutions, in one possible implementation, the electronic screen is connected to the control module via a ribbon cable socket.

[0102] For example, in this solution, the electronic screen can be an electronic paper screen. The electronic paper screen is connected to the socket on the (electronic tag) PCB board via a ribbon cable, and then electrically connected to the control module. The PCB board and the electronic paper screen can be bonded together by dispensing adhesive, thereby fixing the electronic paper screen.

[0103] Based on any of the aforementioned solutions, in one possible implementation, the housing of the electronic tag is further provided with a fixing component, which is used to fix the electronic tag in a designated position.

[0104] For example, in this solution, a fixing component is designed to allow the electronic tag to be fixed to the target surface via back adhesion, screw fixing, or guide rail sliding. The installation method should ensure that the temperature conduction path between the metal plate and the external environment is unobstructed.

[0105] Based on any of the aforementioned solutions, in one possible implementation, the electronic tag further includes a temperature sensor connected to the control module, which is used for temperature measurement of the thermoelectric module.

[0106] For example, in this solution, a temperature sensor is connected to the control module, and the temperature sensor is configured to measure the temperature of the hot and cold ends of the thermoelectric module. The control module and the electronic screen can be configured to display the temperature measured by the temperature sensor.

[0107] Figure 9 This is a schematic diagram of another electronic tag structure in the embodiments, see reference. Figures 2-4 and Figure 9 Based on any of the aforementioned solutions, in one possible implementation, the electronic tag includes a first thermoelectric module 100-1, a second thermoelectric module 100-2, a battery 201, a power management module 300, a control module 400, and an electronic screen 500.

[0108] The first thermoelectric module 100-1 includes a first thermoelectric array, and the second thermoelectric module 100-2 includes a second thermoelectric array. The first thermoelectric array and the second thermoelectric array are electrically connected to the power management module 300 through thermoelectric module contacts R1+, R1-, R2+, and R2-, respectively.

[0109] The electronic tag includes a first housing 11 and a second housing 12, which form a sealed space.

[0110] The first heat-conducting plate 101-1 is disposed on the first housing 11, and the second heat-conducting plate 101-2 is disposed on the second housing 12. The second heat-conducting plate 101-2 is welded to the first thermoelectric array and the second thermoelectric array. (When the first housing 11 and the second housing 12 are assembled, the first heat-conducting plate 101-1 is in contact with the first thermoelectric array and the second thermoelectric array.)

[0111] Battery 201 is connected to control module 400 via power management module 300, and control module 400 is connected to electronic screen 500 via ribbon cable socket 600.

[0112] In this solution, the outer shell of the electronic tag is a one-piece injection molded design with front and rear heat-conducting metal plates. The front and rear metal plates are embedded in the outer shell (the first heat-conducting plate 101-1 is embedded in the first shell 11, and the second heat-conducting plate 101-2 is embedded in the second shell 12). The size of the metal (heat-conducting plate) can be smaller than the size of the shell. Plastic spacers are used on the outside of the shell to ensure that they are not connected, forming a sealed structure when the shell is assembled.

[0113] The size of the outer casing and metal plate can be customized according to the size of the electronic paper screen (electronic screen) (such as 2.13 inches, 4.2 inches or larger). The outer casing can be larger than the metal plate, and the metal plate can also be used directly as the outer casing.

[0114] The front and rear metal plates can be made of aluminum alloy or copper alloy respectively. Aluminum alloy and copper alloy have high heat dissipation and thermal conductivity, making them suitable as hot and cold end materials.

[0115] The surface of the metal plate is anodized (aluminum) or nickel-plated (copper) to improve corrosion resistance and aesthetics, while optimizing thermoelectric conversion efficiency. To further improve efficiency, graphite paper can be applied to the surface.

[0116] In this solution, the first thermoelectric module 100-1, the second thermoelectric module 100-2, the battery 201, the power management module 300, the control module 400, and the electronic screen 500 are mounted on the PCB board, and the components are electrically connected through standardized interfaces (such as FPC connectors and solder points).

[0117] During assembly, the first housing 11 or the second housing 12 is reversed and pressed. After being pressed, the front and rear metal plates and the corresponding thermoelectric modules are tightly connected to ensure that the heat conduction link is connected. At the same time, the thermoelectric modules output power to the power management module 300 through the thermoelectric module (positive and negative) contacts on the PCB board.

[0118] The core of the electronic tag proposed in this solution is to utilize the temperature difference between two metal plates to generate electricity through the Seebeck effect, which powers the internal electronic components. The electronic tag design should be lightweight, durable, and have low power consumption, while also being adaptable to different installation environments.

[0119] 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, 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, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. An electronic tag, characterized in that, include: Thermoelectric module, energy storage module, power management module, control module, and electronic display panel; The thermoelectric module is connected to the energy storage module through the power management module; The energy storage module is connected to the control module through the power management module; The control module is connected to the electronic screen; The power management module is used to charge the energy storage module using the electrical energy generated by the thermoelectric module, and the energy storage module is also used to supply power to the control module through the power management module. The electronic screen is used to display the data sent by the control module.

2. The electronic tag as described in claim 1, characterized in that, It also includes a housing, which is used for assembling and fixing the thermoelectric module, energy storage module, power management module, control module, and electronic screen.

3. The electronic tag as described in claim 2, characterized in that, The thermoelectric module includes a first heat-conducting plate, a second heat-conducting plate, and a thermoelectric array; The first heat-conducting plate and the second heat-conducting plate are connected to the thermoelectric array, and the thermoelectric array is connected to the power management module through positive and negative contacts; The first heat-conducting plate and the second heat-conducting plate are respectively disposed at the first position and the second position of the shell.

4. The electronic tag as described in claim 3, characterized in that, The first heat-conducting plate is disposed on the first outer surface of the housing, and the second heat-conducting plate is disposed on the second outer surface of the housing; The first outer surface and the second outer surface are parallel to each other.

5. The electronic tag as described in claim 3, characterized in that, The first heat-conducting plate is disposed on the first inner surface of the housing, and the second heat-conducting plate is disposed on the second inner surface of the housing; The first heat-conducting plate is provided with a first contact point, which passes through the housing and is placed on the first outer surface of the housing. The second heat-conducting plate is provided with a second contact point, which passes through the housing and is placed on the second outer surface of the housing. The first contact point and the second contact point are used to directly contact the environment. The first inner surface and the second inner surface are parallel to each other.

6. The electronic tag as described in claim 3, characterized in that, The first heat-conducting plate is welded to the thermoelectric array, and the second heat-conducting plate is in contact with the thermoelectric array.

7. The electronic tag as described in claim 1, characterized in that, The electronic screen is connected to the control module via a ribbon cable socket.

8. The electronic tag as described in claim 2, characterized in that, The housing is also equipped with a fixing component for fixing the electronic tag in a designated position.

9. The electronic tag as described in claim 1, characterized in that, It also includes a temperature sensor, which is connected to the control module and is used for temperature measurement of the thermoelectric module.

10. The electronic tag as described in claim 3, characterized in that, The first heat-conducting plate and the second heat-conducting plate are made of metal plates, ceramics or graphite sheets.

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