Self-powered luminescent traffic ice-cream cone based on flexible perovskite solar cells

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By combining flexible perovskite solar cells and piezoelectric thin films, a self-powered system is formed, which solves the problem of poor warning effect of traditional traffic cones in harsh environments. It achieves efficient active warning and stable power supply, reduces maintenance costs, and improves the level of intelligence in traffic management.

CN224314081UActive Publication Date: 2026-06-02SHANGHAI HARBOUR SOFT SOIL TREATMENT ENG (GRP) CO LTD

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: SHANGHAI HARBOUR SOFT SOIL TREATMENT ENG (GRP) CO LTD
Filing Date: 2025-07-01
Publication Date: 2026-06-02

AI Technical Summary

Technical Problem

Traditional traffic cones are ineffective in warning situations with poor lighting, have limited functionality, rely on external power or require frequent battery replacements, have structural design flaws, and are costly to maintain.

Method used

The system combines flexible perovskite solar cells with piezoelectric thin films to form a self-powered system. It also incorporates a micron-level prism array to enhance reflectivity and harvests energy from vehicles and wind. The base uses a three-layer composite structure to adjust weight and enhance stability.

Benefits of technology

It enables efficient and proactive warnings in harsh environments, improves the intelligence level of traffic management, extends the reflection distance, enhances warning clarity, reduces maintenance costs, and strengthens the stability and reliability of the equipment.

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Abstract

The utility model relates to the technical field of safety warning appliance provides self -power supply luminous traffic ice cream cone based on flexible perovskite solar cell, including base and cone body, the curved surface of cone body is pasted with flexible perovskite solar cell, the flexible perovskite solar cell is configured as providing electric energy and providing the reflection warning effect for traffic ice cream cone. The flexible perovskite solar cell pasted on the curved surface of cone body has dual functions of power generation and reflection warning, builds the efficient self -power supply system, solves the problem that traditional traffic warning equipment relies on external power supply or frequently replaces battery, satisfies the initiative warning demand simultaneously, significantly improves the intelligent level of traffic management.

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Description

Technical Field

[0001] This utility model relates to the technical field of safety warning devices, and in particular to a self-powered light-emitting traffic cone with a flexible perovskite solar cell. Background Technology

[0002] In modern traffic management systems, traffic cones serve as crucial road safety warning devices, widely used in scenarios such as road construction zone control, traffic accident scene management, and security for large-scale events. Their main working principle is to utilize the reflective properties of their surface material to convey warning information to passing vehicles and pedestrians, thereby ensuring the safety of road workers and pedestrians.

[0003] However, traditional traffic cones have revealed numerous technical bottlenecks in practical applications. First, their reflective warning effect is highly dependent on external light sources. In environments with poor lighting conditions, such as nighttime without vehicle lighting, dense fog, or torrential rain, the reflection distance of the reflective material is significantly shortened, drastically reducing warning clarity and hindering its effective safety warning function. Second, traditional traffic cones have a relatively limited function, only capable of passive light reflection and lacking active warning capabilities. They cannot effectively and promptly convey danger signals in complex and ever-changing traffic scenarios, failing to meet the growing demands for intelligent and proactive traffic management. Furthermore, traditional traffic cones suffer from structural design flaws. The partitioned layout of reflective strips and solar cells results in low surface utilization, and the reflective strips are prone to aging and detachment, leading to high maintenance costs.

[0004] In summary, traditional traffic cones have significant shortcomings in terms of warning effect, functionality, and structural design. There is an urgent need for a new technical solution to address the pain points of traditional traffic warning devices, such as passive reflection and reliance on external power supply or frequent battery replacements, in order to achieve the sustainable development of traffic facilities. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a self-powered, light-emitting traffic cone based on a flexible perovskite solar cell, comprising a base and a cone; a flexible perovskite solar cell is attached to the curved surface of the cone, and the flexible perovskite solar cell is configured to provide power to the traffic cone and to provide a reflective warning function.

[0006] Furthermore, the flexible perovskite solar cell includes a substrate and a hole transport layer, a perovskite layer, an electron transport layer, a transparent electrode layer, and an encapsulation layer arranged sequentially.

[0007] Furthermore, the encapsulation layer is provided with a micron-scale prism array formed by UV embossing, which generates reverse reflection of transmitted light to achieve a reflective warning function.

[0008] Furthermore, the vertebral body is made of high-strength engineering plastic or carbon fiber composite material. The vertebral body is in the shape of an inverted frustum-shaped cone.

[0009] Furthermore, piezoelectric films are evenly distributed along the bottom edge of the cone. These piezoelectric films are attached to the bottom edge of the cone with an elastic adhesive to form an annular piezoelectric sensing area, maximizing the reception of deformation energy from wind or vehicle crushing.

[0010] Furthermore, electrodes are disposed on the upper and lower surfaces of the piezoelectric film to transfer the generated charge to an energy storage device for storage and utilization.

[0011] Furthermore, a warning device is provided at the top of the cone, and the warning device is connected to the energy storage battery.

[0012] Furthermore, the warning device includes multiple sets of warning lights, which are arranged alternately in a ring to achieve a 360° all-around warning effect.

[0013] Furthermore, the base has a three-layer composite structure, including an upper layer, a middle layer, and an anti-slip fixing layer. The upper layer has a first cavity, which houses an energy storage battery, an MPPT controller, and a DC-DC converter. The energy storage battery is connected to the MPPT controller, which is connected to a flexible perovskite solar cell via a waterproof interface. The energy storage battery is connected to a warning device via a waterproof interface. The DC-DC converter is connected to electrodes.

[0014] The middle layer is provided with a second cavity, and a counterweight is provided in the second cavity. The counterweight is installed in the second cavity through a slot structure to realize the adjustable function of the overall weight of the base.

[0015] The anti-slip fixing layer comprises a three-layer anti-slip fixing structure consisting of a modified silicone rubber pad, a micron-sized boss, and a rotatable anchor, arranged sequentially from top to bottom.

[0016] Furthermore, the energy storage battery has a drawer-type detachable structure, which facilitates maintenance and replacement.

[0017] This utility model has the following beneficial effects:

[0018] (1) The flexible perovskite solar cell with conical curved surface of this utility model has both power generation and reflective warning functions, and constructs a high-efficiency self-powered system, which completely solves the problem of traditional traffic warning equipment relying on external power supply or frequent battery replacement, while meeting the needs of active warning and significantly improving the level of intelligent traffic management.

[0019] (2) The micron-level prism array formed by UV imprinting on the encapsulation layer of the flexible solar cell in this utility model can reflect the transmitted light in reverse, enhance the reflective warning effect, and effectively extend the reflection distance and improve the warning clarity even in environments with poor light conditions, providing more reliable safety protection for road workers and passers-by.

[0020] (3) The piezoelectric thin film evenly distributed on the bottom edge of the cone of this utility model forms an annular piezoelectric induction area. Combined with the electrodes set on the upper and lower surfaces, it can utilize the pressure generated when vehicles or pedestrians pass by to collect energy through the piezoelectric effect. It forms a composite energy supply with the flexible perovskite solar cell, further improving energy utilization efficiency and ensuring stable operation of the equipment.

[0021] (4) The multiple sets of alternating ring-shaped warning lights at the top of the cone of this utility model can achieve a 360° all-round warning effect with no blind spots, effectively improving the warning capability in complex traffic scenarios; and the warning device is connected to the energy storage battery to ensure that the warning lights work continuously and stably.

[0022] (5) The base of this utility model adopts a three-layer composite structure. The slotted installation of the middle layer counterweight block realizes the overall weight adjustment function, and the stability can be adjusted according to different usage scenarios. The modified silicone rubber pad, micron boss and rotatable anchor nail three-layer anti-slip fixing structure of the anti-slip fixing layer enhances the friction and grip between the equipment and the ground, and prevents the equipment from shifting or tipping due to factors such as vehicle airflow and wind. Attached Figure Description

[0023] Figure 1 This is a plan view of the present invention.

[0024] Figure 2 This is a schematic diagram of the layered structure of the flexible perovskite solar cell in this utility model.

[0025] Figure 3 This is a schematic diagram of the base structure in this utility model.

[0026] Figure 4 This is a schematic diagram of energy transmission in this utility model. Detailed Implementation

[0027] The technical solution of this utility model will be further described in detail below with reference to specific embodiments. However, this embodiment is not intended to limit this utility model. Any similar structure or similar variation of this utility model should be included in the protection scope of this utility model. The commas in this utility model all indicate the relationship between and. The English letters in this utility model are case-sensitive.

[0028] like Figure 1As shown, this utility model provides a self-powered, light-emitting traffic cone based on a flexible perovskite solar cell, including a base 1 and a cone 2. A flexible perovskite solar cell 3 is attached to the curved surface of the cone 2. The flexible perovskite solar cell 3 is configured to provide power to the traffic cone and also to provide a reflective warning function, completely solving the problem of traditional traffic warning devices relying on external power or frequent battery replacements. It also meets the needs of active warning, significantly improving the level of intelligent traffic management. Simultaneously, the nighttime warning light can actively emit light, more effectively attracting the attention of passing vehicles and pedestrians, greatly enhancing the warning effect of the traffic cone at night and in low-light environments, and improving road safety.

[0029] like Figure 2 As shown, the flexible perovskite solar cell 3 includes a substrate 31 and a transparent electrode layer 32, a hole transport layer 33, a perovskite layer 34, an electron transport layer 35, a metal electrode layer 36, and an encapsulation layer 37 arranged sequentially. The substrate 31 is a flexible and transparent substrate, serving as the basic support for the solar cell, providing flexibility and light transmittance to ensure the cell can be adapted to curved installation scenarios. The hole transport layer 33 receives holes generated by the perovskite layer and directionally transports them to the electrodes, facilitating charge separation and collection. The perovskite layer 34 absorbs sunlight and excites electron-hole pairs, initiating photoelectric conversion. The electron transport layer 35 guides the electron transport generated by the perovskite layer, working in conjunction with the hole transport layer to achieve effective charge separation. The metal electrode layer 36 collects the charges separated by the transport layer, forming an output current, completing the key step from photoelectric conversion to electrical energy output. The encapsulation layer 37 is equipped with a micron-sized prism array formed by UV imprinting. The micron-sized prism array has a bottom side length of 40μm–60μm and a height of 20μm–40μm, which can reverse reflect transmitted light, enhancing the reflective warning effect. Even in environments with poor lighting conditions, it can effectively extend the reflection distance and improve the clarity of the warning, providing more reliable safety protection for road workers and pedestrians. Flexible perovskite solar cells absorb sunlight. The perovskite layer (350nm-450nm thick) excites electron-hole pairs, which generate current through the hole transport layer, electron transport layer, and electrode layer, converting light energy into electrical energy. The transparent electrode layer is made of AZO material with a thickness of 150nm-200nm. The transparent electrode layer and the encapsulation layer (micron-scale prism array) work together to control the light transmittance to 20%-40%, achieving both power generation and light reflection functions.

[0030] The cone body 2 is made of high-strength engineering plastic or carbon fiber composite material, which has higher strength and better weather resistance compared to traditional materials. It can adapt to complex and ever-changing traffic environments, reduce damage caused by external impacts or natural factors, and lower maintenance costs. The cone body is in the shape of an inverted frustum-cone.

[0031] The bottom edge of the cone 2 is uniformly provided with piezoelectric films 4. The piezoelectric films 4 are adhered to the bottom edge of the cone 2 with elastic adhesive to form an annular piezoelectric induction area, maximizing the reception of deformation energy from wind or vehicle rolling. The piezoelectric film 4 is a PVDF piezoelectric film. The PVDF piezoelectric film has a thickness of 0.1 mm and is connected to the energy storage circuit of the base through electrode leads. Electrodes are set on the upper and lower surfaces of the piezoelectric film 4 to transfer the generated charge to the energy storage device for storage and utilization.

[0032] The top of the cone 2 is equipped with a warning device 5, which is connected to a storage battery. The warning device 5 includes multiple sets of warning lights, which are arranged alternately in a ring to achieve a 360° all-around warning effect.

[0033] like Figure 3-4 As shown, the base 1 has a three-layer composite structure, including an upper layer 11, a middle layer 12, and an anti-slip fixing layer 13. The upper layer 11 has a first cavity 111, which houses an energy storage battery 6, an MPPT controller 7, and a DC-DC converter 8. The energy storage battery 6 is connected to the MPPT controller 7 and the DC-DC converter 8. The electrode leads of the PVDF piezoelectric film are inserted into the bottom of the cone, and the electrodes are connected to the DC-DC converter 8. The MPPT controller 7 is connected to the flexible perovskite solar cell 3 through a waterproof interface. The energy storage battery 6 is connected to the warning device through a waterproof interface. Specifically, two sets of alternating red and yellow LED warning lights are fixed at the top of the cone with clips and connected to the output terminal of the energy storage battery through wires. After being optimized by the MPPT controller 7, the electrical energy is transmitted to the energy storage battery 6 in the base to ensure that the solar cell always works at maximum power output. The energy storage battery 6 stores electrical energy to power the warning device at night or in low light environments. When a vehicle runs over it or when it is exposed to wind, the PVDF piezoelectric film at the bottom edge of the cone deforms, and the electrodes on the upper and lower surfaces collect charge. After being processed by the DC-DC converter 8, the charge is stored in the lithium battery, extending the driving range on rainy days. The energy storage battery has a drawer-type detachable structure for easy maintenance and replacement.

[0034] The middle layer 12 is provided with a second cavity 121, and a counterweight 9 is provided in the second cavity 121. The counterweight 9 is installed in the second cavity 121 through a slot structure 122 to realize the adjustable function of the overall weight of the base 1.

[0035] The anti-slip fixing layer 13 comprises a three-layer anti-slip fixing structure consisting of a modified silicone rubber pad 131, micron-sized protrusions 132, and a rotatable anchor 133 arranged sequentially from top to bottom. The modified silicone rubber pad is enriched with nano-silica and has a thickness of 2cm, with a surface array of micron-sized protrusions 0.5mm high and 1mm apart. The rotatable anchor is located at the edge of the base, with a length of 5cm, and its extension is controlled by a 90° rotating handle. The base 1 adopts a three-layer composite structure. The slotted installation of the middle counterweight block enables the overall weight to be adjustable, allowing for stability adjustments based on different usage scenarios. The three-layer anti-slip fixing structure of the modified silicone rubber pad, micron-sized protrusions, and rotatable anchor enhances the friction and grip between the equipment and the ground, preventing the equipment from shifting or tipping over due to factors such as vehicle airflow and wind.

[0036] The flexible perovskite solar cell of this invention has a flexible substrate that allows it to fit tightly onto the curved surface of a cone. This not only does not affect the appearance and use of the traffic cone, but also makes full use of the surface area of the cone, increasing the solar energy absorption area and improving power generation efficiency.

[0037] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

Claims

1. A self-powered, light-emitting traffic cone based on a flexible perovskite solar cell, comprising a base and a cone; characterized in that, The curved surface of the cone is fitted with a flexible perovskite solar cell, which is configured to provide power to the traffic cone and to provide a reflective warning function.

2. The self-powered luminous traffic cone based on a flexible perovskite solar cell according to claim 1, characterized in that, The flexible perovskite solar cell includes a substrate and a hole transport layer, a perovskite layer, an electron transport layer, a transparent electrode layer, and an encapsulation layer arranged sequentially.

3. The self-powered luminous traffic cone based on a flexible perovskite solar cell according to claim 2, characterized in that, The encapsulation layer is equipped with a micron-scale prism array formed by UV embossing, which reverses the transmitted light to achieve a reflective warning function.

4. The self-powered luminous traffic cone based on a flexible perovskite solar cell according to claim 1, characterized in that, The cone is made of high-strength engineering plastics or carbon fiber composite materials.

5. The self-powered luminous traffic cone based on a flexible perovskite solar cell according to claim 1, characterized in that, The bottom edge of the cone is uniformly provided with piezoelectric films, forming an annular piezoelectric induction region.

6. The self-powered luminous traffic cone based on a flexible perovskite solar cell according to claim 5, characterized in that, Electrodes are disposed on the upper and lower surfaces of the piezoelectric film.

7. The self-powered luminous traffic cone based on a flexible perovskite solar cell according to claim 6, characterized in that, The top of the cone is equipped with a warning device, which is connected to the energy storage battery.

8. The self-powered luminous traffic cone based on a flexible perovskite solar cell according to claim 7, characterized in that, The warning device includes multiple sets of warning lights, which are arranged alternately in a ring.

9. The self-powered luminous traffic cone based on a flexible perovskite solar cell according to claim 8, characterized in that, The base has a three-layer composite structure, including an upper layer, a middle layer, and an anti-slip fixing layer. The upper layer has a first cavity, which houses an energy storage battery, an MPPT controller, and a DC-DC converter. The energy storage battery is connected to the MPPT controller and the DC-DC converter. The MPPT controller is connected to a flexible perovskite solar cell via a waterproof interface. The energy storage battery is connected to a warning device via a waterproof interface. The DC-DC converter is connected to electrodes. The middle layer is provided with a second cavity, and a counterweight is provided in the second cavity. The counterweight is installed in the second cavity through a slot structure to realize the adjustable function of the overall weight of the base. The anti-slip fixing layer comprises a three-layer anti-slip fixing structure consisting of a modified silicone rubber pad, a micron-sized boss, and a rotatable anchor, arranged sequentially from top to bottom.

10. The self-powered luminous traffic cone based on a flexible perovskite solar cell according to claim 9, characterized in that, The energy storage battery has a drawer-type, detachable structure.