New energy vehicle lamp integrated with photovoltaic module
Patent Information
- Application Number
- CN202521095085.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-30
- Publication Date
- 2026-09-04
- Estimated Expiration
- 2035-05-30
AI Technical Summary
但是，此过程中存在电力转换效率损失以及长线路传输损耗等问题
本实用新型将光伏组件通过胶黏剂固定在灯罩外表面，使光伏组件发电直接应用于车灯，为车灯日间照明提供了持续、稳定的能源，降低了传统方法中长线路传输带来的损耗，另外，光伏组件采用钙钛矿电池，具有高转换效率和可弯曲特性，不影响车灯原有的照明功能，对车灯的重量也无显著影响。在光源板上设置TEG模组，利用光伏组件与环境温度差发电，不仅为车灯日间照明提供了电源，同时还有效降低了光伏组件的温度，避免了光伏组件因工作环境温度过高而影响发电效率。
Smart Images
Figure CN224718731U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a new energy vehicle lamp integrating photovoltaic modules, belonging to the field of automotive lighting technology. Background Technology
[0002] Currently, the application of photovoltaic power supply in the automotive field is gradually becoming a hot topic in the industry. Its core value lies in providing clean energy support for vehicle systems through solar energy technology, reducing dependence on traditional batteries, and improving sustainability.
[0003] Among existing technologies, solar-powered cars have already been developed, which install solar panels on the hood and roof to generate electricity through sunlight, which then powers the headlights. However, this process suffers from problems such as power conversion efficiency loss and long-distance transmission losses. Utility Model Content
[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a new energy vehicle light that integrates photovoltaic modules. By integrating the photovoltaic modules with the vehicle light, photovoltaic power generation technology can be directly applied to the vehicle light, reducing the losses caused by long-distance transmission in traditional methods and improving energy conversion efficiency.
[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: This utility model provides a new energy vehicle lamp integrated with photovoltaic modules. It is characterized in that it includes a lamp housing, a lamp cover fixed on the lamp housing, a photovoltaic module fixed on the outer surface of the lamp cover, and a light source plate, a battery and a light guide located in the cavity formed by the lamp housing and the lamp cover. The light source board and the battery are both fixed inside the lamp housing. The light guide is fixed on the light source board and located on one side of the light-emitting surface of the light source board. The lamp cover is provided with a first light-emitting area and a second light-emitting area located on the outer periphery of the first light-emitting area. The photovoltaic module is fixed on the first light-emitting area. The light emitted by the light source board passes through the light guide and is emitted from the first light-emitting area and the second light-emitting area of the lamp cover respectively. The light emitted from the first light-emitting area is emitted from the photovoltaic module.
[0006] Furthermore, the light source board is provided with a TEG module, which includes a cold end and a hot end. The hot end is connected to the photovoltaic module, and the cold end is connected to the outer surface of the lamp housing.
[0007] Furthermore, the photovoltaic module is a perovskite cell, which is attached to the outer surface of the lampshade.
[0008] Furthermore, the photovoltaic module and the lampshade are connected by adhesive.
[0009] Furthermore, heat dissipation fins are fixed on the outer surface of the lamp housing, and the cold end of the TEG module is connected to the heat dissipation fins.
[0010] Furthermore, the light guide is a microprism array structure, and its surface is coated with an anti-reflective coating.
[0011] By adopting the above technical solution, this utility model has the following beneficial effects: This invention fixes photovoltaic (PV) modules to the outer surface of the lamp cover using adhesive, allowing the power generated by the PV modules to be directly applied to the vehicle lights. This provides a continuous and stable energy source for daytime illumination, reducing losses caused by long transmission lines in traditional methods. Furthermore, the PV modules utilize perovskite cells, which have high conversion efficiency and flexibility, without affecting the original lighting function of the vehicle lights or significantly impacting their weight. By incorporating a TEG module on the light source board and utilizing the temperature difference between the PV modules and the ambient environment, power is generated. This not only provides power for daytime illumination but also effectively reduces the temperature of the PV modules, preventing high operating temperatures from affecting their power generation efficiency. Attached Figure Description
[0012] Figure 1 This is an overall structural diagram of the new energy vehicle lamp integrating photovoltaic modules according to this utility model; Figure 2 This is a cross-sectional view of the light source plate and light guide of this utility model; Figure 3 This is a cross-sectional view of the lamp housing and light source board of this utility model; Figure 4 This is a top view of the light source board and TEG module of this utility model; Figure 5 This is a top view of the lamp housing, light source board, and storage battery of this utility model. Detailed Implementation
[0013] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.
[0014] Example 1 like Figure 1 , 2 As shown in Figures 3 and 4, this embodiment provides a new energy vehicle lamp integrated with a photovoltaic module. It includes a lamp housing 1, a lamp cover 2 fixed to the lamp housing 1 by snap-fit, a photovoltaic module 3 fixed to the outer surface of the lamp cover 2 by adhesive 7, and a light source plate 4, a battery 5, and a light guide 6 located in the cavity formed by the lamp housing 1 and the lamp cover 2.
[0015] like Figure 1As shown, the photovoltaic module 3 in this embodiment is made of flexible thin-film material and can be a perovskite cell. It absorbs sunlight and converts light energy into electrical energy, which is then stored in the battery 5, providing a continuous and stable power source for the vehicle's daytime lighting. The photovoltaic module 3 generates electricity that is directly applied to the vehicle's lights, reducing the losses caused by long-distance transmission in traditional methods. In addition, compared to traditional silicon-based solar cells, perovskite cells are not only cheaper but also more flexible and can be made into transparent or semi-transparent photovoltaic modules. Thanks to the development of efficient flexible photovoltaic technology, perovskite cells have high conversion efficiency and bendability, making them suitable for integration into curved or transparent surfaces of vehicle lights.
[0016] like Figure 1 As shown, the lampshade 2 in this embodiment is provided with a first light-emitting area 21 and a second light-emitting area 22 located on the outer periphery of the first light-emitting area 21. The photovoltaic module 3 is fixed on the first light-emitting area 21. The light emitted by the light source board 4 passes through the light guide 6 and is emitted from the first light-emitting area 21 and the second light-emitting area 22 of the lampshade 2 respectively. The light emitted from the first light-emitting area 21 is emitted from the photovoltaic module 3. The lighting function of the vehicle headlight is mainly achieved by the light emitted from the second light-emitting area 22, and the light emitted from the photovoltaic module 3 is used for auxiliary lighting. The area ratio of the first light-emitting area 21 and the second light-emitting area 22 can be adjusted according to actual needs. If power generation needs are considered, the area of the first light-emitting area 21 can be appropriately increased; if lighting needs are considered, the area of the second light-emitting area 22 can be appropriately increased.
[0017] like Figure 1 As shown, in this embodiment, the adhesive 7 used to fix the photovoltaic module 3 on the first light-emitting area 21 can be an optical UV adhesive. Optical UV adhesive is a high-performance adhesive designed specifically for optical applications. It has high light transmittance and can ensure that the vehicle headlight illumination is not affected by the adhesive layer. After the photovoltaic module 3 is glued to the outer surface of the lamp cover 2, the vehicle headlight does not have a significant weight change.
[0018] In this embodiment, since the surface area of the vehicle headlight is relatively small, the surface area of the photovoltaic module 3 attached to the outer surface of the headlight cover 2 is also relatively small. The amount of electrical energy converted by the photovoltaic module 3 through absorbing sunlight is limited. Therefore, the vehicle headlight in this embodiment should be a daytime running light with relatively low power consumption, which can avoid the situation of supply falling short of demand and is conducive to extending the life of the photovoltaic module 3 and the battery 5.
[0019] like Figure 2 As shown, in this embodiment, the light guide 6 is located on the light-emitting surface side of the light source plate 4, and the light guide 6 is screwed onto the light source plate 4. The light guide 6 is used to guide the light emitted by the light source plate 4 to the target area, avoiding scattering or energy loss. In this embodiment, the light guide 6 can adopt a microprism array structure, and its surface is coated with an anti-reflective coating.
[0020] like Figure 3As shown, the light source plate 4 in this embodiment is a light-emitting component in the vehicle lamp. Screws are passed through the through holes on the light source plate 4 and screwed to the studs 11 inside the lamp housing 1.
[0021] In this embodiment, since the operating temperature of the photovoltaic module 3 directly affects its power generation efficiency, lifespan and reliability, when the temperature is greater than 50°C, the photovoltaic module 3 will lose 0.3% to 0.5% of its power generation for every 1°C increase. Especially in scenarios where space is limited and temperature changes are drastic, such as car headlights, special attention needs to be paid to the temperature adaptability of the photovoltaic module 3. Therefore, this embodiment also adopts thermoelectric recovery.
[0022] Specifically, such as Figure 5 As shown, to achieve thermoelectric recovery, the light source board 4 in this embodiment is equipped with a TEG module 41. The TEG module 41 is also known as a thermoelectric generator, which can directly convert temperature difference into electrical energy using the Seebeck effect. The TEG module 41 includes a cold end 411 and a hot end 412. The TEG module 41 in this embodiment can be TEG1-199-3.5-6. The cold end 411 is the side of the TEG module 41 that is in contact with the low-temperature environment. It is mainly responsible for forming a stable temperature difference with the hot end 412. The lower the temperature of the cold end 411, the greater the temperature difference, and the higher the output power of the TEG module 41. The hot end 412 is the side of the TEG module 41 that is in contact with the high-temperature heat source. It is the high-temperature side that absorbs heat to form a temperature gradient, driving carrier migration to generate electrical energy. The higher the temperature of the hot end 412, the higher the power generation efficiency.
[0023] Specifically, in this embodiment, the TEG module 41 generates electricity by utilizing the temperature difference between the photovoltaic module 3 and the ambient temperature, and stores the electrical energy in the battery 5. This not only provides power for the daytime lighting of the vehicle headlights, but also effectively reduces the temperature of the photovoltaic module 3, preventing the photovoltaic module 3 from being affected by excessively high ambient temperature, thus avoiding the impact on power generation efficiency.
[0024] Specifically, since the temperature of the outer surface of the lamp housing 1 is closest to the ambient temperature, the hot end 412 of the TEG module 41 is connected to the photovoltaic module 3, and the cold end 411 of the TEG module 41 is connected to the outer surface of the lamp housing 1. Since there is a certain distance between the TEG module 41 and both the photovoltaic module 3 and the lamp housing 1, they cannot directly contact each other, so a heat pipe is needed as a heat transfer medium.
[0025] Specifically, the hot end 412 of the TEG module 41 is connected to the photovoltaic module 3 through the first heat pipe, and the cold end 411 of the TEG module 41 is connected to the outer surface of the lamp housing 1 through the second heat pipe, thereby realizing heat conduction between the hot end 412 of the TEG module 41 and the photovoltaic module 3, as well as heat conduction between the cold end 411 of the TEG module 41 and the outer surface of the lamp housing 1.
[0026] Specifically, the evaporation end of the first heat pipe is connected to the photovoltaic module 3 by welding, and the condensation end of the first heat pipe is connected to the hot end 412 of the TEG module 41 by welding. The evaporation end of the first heat pipe absorbs the heat from the photovoltaic module 3 and transfers it to the condensation end of the first heat pipe. The condensation end of the first heat pipe releases heat to the hot end 412 of the TEG module 41, thereby completing the heat transfer from the photovoltaic module 3 to the hot end 412 of the TEG module 41. The evaporation end of the second heat pipe is connected to the cold end 411 of the TEG module 41 by welding, and the condensation end of the second heat pipe is connected to the outer surface of the lamp housing 1 by thermally conductive adhesive, so that the condensation end of the second heat pipe can come into contact with the ambient air outside the vehicle lamp. The evaporation end of the second heat pipe absorbs the heat from the cold end 411 of the TEG module 41 and transfers it to the condensation end of the second heat pipe. The condensation end of the second heat pipe releases the heat, thereby minimizing the temperature of the cold end 411 of the TEG module 41 and bringing the temperature of the cold end 411 of the TEG module 41 close to the ambient temperature, maintaining the temperature difference between the hot end 412 and the cold end 411.
[0027] A heat pipe is a heat transfer element with extremely high thermal conductivity, transferring heat through the evaporation and condensation of a liquid within a fully enclosed vacuum tube. A heat pipe mainly consists of an evaporator and a condenser. The evaporator is the part of the heat pipe that absorbs heat; when heat from a heat source is transferred to the evaporator, the liquid inside the heat pipe evaporates, changing from a liquid to a gaseous state, absorbing a large amount of heat. The condenser is the part of the heat pipe that releases heat; the liquid inside the heat pipe flows to the condenser and condenses back into a liquid state, releasing the absorbed heat.
[0028] like Figure 4 As shown, in this embodiment, the battery 5 is fixed inside the lamp housing 1 by a snap-fit connection. The battery 5 provides continuous and stable energy for the daytime running lights. The energy in the battery 5 comes from the electrical energy converted from solar energy by the photovoltaic module 3 and the electrical energy converted from temperature difference by the TEG module 41. When the battery 5 has a charge greater than 25%, it supplies power to the daytime running lights. When the battery 5 has a charge less than or equal to 25%, it switches to being powered by the vehicle battery, which helps to extend the battery 5's lifespan and ensure driving safety.
[0029] Example 2 In this embodiment, heat dissipation fins are fixed to the outer surface of the lamp housing 1. The lamp housing 1 and the heat dissipation fins can be connected by thermally conductive adhesive. The evaporation end of the second heat pipe is welded to the cold end 411 of the TEG module 41, and the condensation end of the second heat pipe is connected to the heat dissipation fins by thermally conductive adhesive. The heat dissipation fins are made of high thermal conductivity materials, such as aluminum alloy or copper alloy. Compared with directly fixing the cold end 411 to the outer surface of the lamp housing 1, adding heat dissipation fins can accelerate the heat dissipation of the cold end 411 and improve the power generation efficiency of the TEG module 41.
[0030] The working principle of this utility model is as follows: The photovoltaic module 3 converts the absorbed solar energy into electrical energy and stores it in the battery 5. At the same time, the TEG module 41 generates electricity using the temperature difference between the photovoltaic module 3 and the ambient temperature and stores it in the battery 5. When the battery 5 has a charge of more than 25%, it powers the daytime running lights. When the battery 5 has a charge of less than or equal to 25%, it switches to being powered by the vehicle battery.
[0031] This invention fixes the photovoltaic module 3 to the outer surface of the lamp cover 2 using adhesive 7, allowing the photovoltaic module 3 to directly generate electricity for the vehicle headlight, providing a continuous and stable energy source for daytime illumination. This reduces the losses caused by long transmission lines in traditional methods. Furthermore, the photovoltaic module 3 uses perovskite cells, which have high conversion efficiency and flexibility, without affecting the original lighting function of the headlight or significantly impacting its weight. A TEG module 41 is installed on the light source board 4, utilizing the temperature difference between the photovoltaic module 3 and the ambient environment to generate electricity. This not only provides power for the daytime illumination of the headlight but also effectively reduces the temperature of the photovoltaic module 3, preventing its power generation efficiency from being affected by excessively high ambient temperatures.
[0032] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A new energy vehicle light integrating a photovoltaic module, characterized in that, It includes a lamp housing (1), a lamp shade (2) fixed on the lamp housing (1), a photovoltaic module (3) fixed on the outer surface of the lamp shade (2), and a light source plate (4), a battery (5) and a light guide (6) located in the cavity formed by the lamp housing (1) and the lamp shade (2). The light source plate (4) and the battery (5) are both fixed inside the lamp housing (1). The light guide (6) is fixed on the light source plate (4) and located on the light-emitting side of the light source plate (4). The lamp cover (2) is provided with a first light-emitting area (21) and a second light-emitting area (22) located on the outer periphery of the first light-emitting area (21). The photovoltaic module (3) is fixed on the first light-emitting area (21). The light emitted by the light source plate (4) passes through the light guide (6) and is emitted from the first light-emitting area (21) and the second light-emitting area (22) of the lamp cover (2) respectively. The light emitted by the first light-emitting area (21) is emitted from the photovoltaic module (3).
2. The new energy vehicle lamp integrating a photovoltaic module according to claim 1, characterized in that, The light source board (4) is provided with a TEG module (41), which includes a cold end (411) and a hot end (412). The hot end (412) is connected to the photovoltaic module (3), and the cold end (411) is connected to the outer surface of the lamp housing (1).
3. The new energy vehicle lamp integrating a photovoltaic module according to claim 1, characterized in that, The photovoltaic module (3) is a perovskite cell, which is attached to the outer surface of the lampshade (2).
4. The new energy vehicle lamp integrating a photovoltaic module according to claim 1, characterized in that, The photovoltaic module (3) and the lamp cover (2) are connected by adhesive (7).
5. The new energy vehicle lamp integrating a photovoltaic module according to claim 2, characterized in that, The lamp housing (1) has heat dissipation fins fixed on its outer surface, and the cold end (411) of the TEG module (41) is connected to the heat dissipation fins.
6. The new energy vehicle lamp integrating a photovoltaic module according to claim 1, characterized in that, The light guide (6) is a microprism array structure and its surface is coated with an anti-reflective coating.