A two-wheeled electric vehicle lamp color temperature adjusting system and a two-wheeled electric vehicle

Abstract

This application discloses a two-wheeled electric vehicle headlight color temperature adjustment system and a two-wheeled electric vehicle, relating to the field of electric vehicle headlights. The two-wheeled electric vehicle includes a rain sensor, a body controller, a microcontroller, a cold light driving circuit, a warm light driving circuit, and a headlight assembly. The terminal establishes a data communication connection with the first input terminal of the body controller via a wireless communication module. The second input terminal of the body controller is electrically connected to the output terminal of the rain sensor, and the output terminal of the body controller is electrically connected to the input terminal of the microcontroller. The first output terminal of the microcontroller is electrically connected to the input terminal of the warm light driving circuit, and the second output terminal of the microcontroller is electrically connected to the input terminal of the cold light driving circuit. The input terminal of the headlight assembly is electrically connected to the output terminals of the cold light driving circuit and the warm light driving circuit, respectively. This application achieves an organic unity of lighting performance and environmental adaptation through a dual-channel color temperature adjustment system.

Description

Technical Field

[0001] This application relates to the field of electric vehicle headlights, and more specifically, to a headlight color temperature adjustment system for a two-wheeled electric vehicle and the two-wheeled electric vehicle itself. Background Technology

[0002] In the field of optics, light is broadly classified into two categories based on its color temperature: cool white light (high color temperature) and warm yellow light (low color temperature). Cool white light is close to the color temperature of midday sunlight (approximately 5500K), which can stimulate the cerebral cortex and enhance alertness, thus it is widely used in vehicle lighting. Conversely, warm yellow light, with its wavelength between red and green light, exhibits stronger penetrating power in low-visibility environments such as rain, fog, and haze, helping to improve visual clarity and safety.

[0003] However, over 95% of electric two-wheelers on the market currently use cool white light as their primary lighting source. While this choice is sufficient in most cases, it may not provide optimal safety in certain situations, such as at night or in inclement weather. In fact, some food delivery riders install warm yellow spotlights to improve safety while riding at night. Although this method does improve visibility and safety to some extent, it also brings inconveniences, such as cumbersome operation and a lack of intelligent control. Utility Model Content

[0004] The purpose of this application is to provide a headlight color temperature adjustment system for a two-wheeled electric vehicle and a two-wheeled electric vehicle, so as to solve the above-mentioned problems existing in the prior art. It can automatically adjust the ratio of warm yellow light and cool white light to improve riding safety.

[0005] In a first aspect, this application provides a headlight color temperature adjustment system for a two-wheeled electric vehicle, applied to a two-wheeled electric vehicle. The system includes: a rain sensor, a vehicle body controller, a microcontroller, a cold light driving circuit, a warm light driving circuit, and a headlight assembly. The first input terminal of the vehicle body controller is communicatively connected to the driver's terminal; the second input terminal of the vehicle body controller is electrically connected to the output terminal of the rain sensor, and the output terminal of the vehicle body controller is electrically connected to the input terminal of the microcontroller; the first output terminal of the microcontroller is electrically connected to the input terminal of the warm light driving circuit, and the second output terminal of the microcontroller is electrically connected to the input terminal of the cold light driving circuit; the input terminal of the headlight assembly is electrically connected to the output terminals of both the cold light driving circuit and the warm light driving circuit.

[0006] The vehicle body controller is used to receive the headlight color temperature adjustment command sent by the terminal and transmit the headlight color temperature adjustment command to the microcontroller; or, to obtain the rainfall in the environment where the two-wheeled electric vehicle is located in real time collected by the rain sensor, and generate a light control command according to the configured correspondence between different rainfall amounts and different light levels; and to transmit the light control command or the headlight color temperature adjustment command to the microcontroller.

[0007] The microcontroller is used to drive the cold light driving circuit and / or the warm light driving circuit to work based on the light control command or the vehicle light color temperature adjustment command, so as to control the adjustment of the vehicle light color temperature of the vehicle light assembly.

[0008] In one possible implementation, the warm light driving circuit includes a first resistor, a second resistor, a first MOSFET, a warm light driving chip, a third resistor, a first rectifier diode, a warm yellow LED, a first current sensing resistor, a first capacitor, a second capacitor, and a third capacitor.

[0009] One end of the first resistor is connected to the first power supply, the other end of the first resistor is electrically connected to the source of the first MOS transistor, the gate of the first MOS transistor is connected to one end of the second resistor, the other end of the second resistor is electrically connected to the first output terminal of the microcontroller, and the drain of the first MOS transistor is connected to the DIM port of the warm light driver chip.

[0010] The VDD port of the warm light driver chip is electrically connected to the first end of the third resistor, and the second end of the third resistor is electrically connected to the second power supply.

[0011] The second end of the third resistor is also electrically connected to the negative terminal of the first rectifier diode and the positive terminal of the warm yellow LED. The positive terminal of the first rectifier diode and the negative terminal of the warm yellow LED are respectively electrically connected to the output port of the warm light driver chip. The first end of the third resistor is also grounded through the first capacitor.

[0012] The CS port of the warm light driver chip is grounded through a first current sensing resistor; the TOFF port of the warm light driver chip is grounded through a second capacitor; and the second power supply is also grounded through a third capacitor.

[0013] The GND port of the warm light driver chip is grounded.

[0014] In one possible implementation, the cold light driving circuit includes a fourth resistor, a fifth resistor, a second MOSFET, a cold light driving chip, a sixth resistor, a second rectifier diode, a cold yellow LED, a second current sensing resistor, a fourth capacitor, a fifth capacitor, and a sixth capacitor.

[0015] One end of the fourth resistor is connected to the first power supply, the other end of the fourth resistor is electrically connected to the source of the second MOS transistor, the gate of the second MOS transistor is connected to one end of the fifth resistor, the other end of the fifth resistor is electrically connected to the second output terminal of the microcontroller, and the drain of the second MOS transistor is connected to the DIM port of the cold light driver chip.

[0016] The VDD port of the cold light driver chip is electrically connected to the first end of the sixth resistor, and the second end of the sixth resistor is electrically connected to the second power supply.

[0017] The second end of the sixth resistor is also electrically connected to the negative terminal of the second rectifier diode and the positive terminal of the cool white LED. The positive terminal of the second rectifier diode and the negative terminal of the cool white LED are respectively electrically connected to the output port of the cold light driver chip. The first end of the sixth resistor is also grounded through the fourth capacitor.

[0018] The CS port of the cold light driver chip is grounded through the second current sensing resistor; the TOFF port of the cold light driver chip is grounded through the fifth capacitor; and the second power supply is also grounded through the sixth capacitor.

[0019] The GND port of the cold light driver chip is grounded.

[0020] In one possible implementation, both the cold light driving chip and the cold light driving chip are constant current driving chips.

[0021] In one possible implementation, the rain sensor is mounted on the windshield at the front of the two-wheeled electric vehicle.

[0022] In one possible implementation, the headlight assembly includes a concave lens, a circuit board, at least one warm yellow LED and at least one cool white LED;

[0023] The warm yellow LED and the cool white LED are disposed on the first side of the circuit board, and the first side is disposed inside the concave surface of the concave lens.

[0024] In one possible implementation, multiple warm yellow LEDs and multiple cool white LEDs are arranged alternately at a preset interval on the first side of the circuit board.

[0025] In one possible implementation, multiple warm yellow LEDs and multiple cool white LEDs are arranged at equal angular intervals around the center point of the first side of the circuit board.

[0026] In one possible implementation, a warm yellow LED and a cool white LED are arranged side by side at a predetermined interval on the first side of the circuit board.

[0027] Secondly, this application provides a two-wheeled electric vehicle, including any of the systems described in the first aspect.

[0028] This application provides a headlight color temperature adjustment system for a two-wheeled electric vehicle. The system is applied to a two-wheeled electric vehicle, which includes a rain sensor, a vehicle body controller, a microcontroller, a cold light driving circuit, a warm light driving circuit, and a headlight assembly. A terminal establishes a data communication connection with the first input terminal of the vehicle body controller via a wireless communication module. The second input terminal of the vehicle body controller is electrically connected to the output terminal of the rain sensor, and the output terminal of the vehicle body controller is electrically connected to the input terminal of the microcontroller. The first output terminal of the microcontroller is electrically connected to the input terminal of the warm light driving circuit, and the second output terminal of the microcontroller is electrically connected to the input terminal of the cold light driving circuit. The input terminal of the headlight assembly is electrically connected to the output terminals of both the cold light driving circuit and the warm light driving circuit. This application achieves an organic unity of lighting performance and environmental adaptability through a dual-channel color temperature adjustment system. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A system structure diagram of a headlight color temperature adjustment system for a two-wheeled electric vehicle provided in this application embodiment;

[0031] Figure 2 A schematic diagram of the terminal color temperature adjustment interface provided in the embodiments of this application;

[0032] Figure 3 Circuit diagrams of the cold light driving circuit and the warm light driving circuit provided in the embodiments of this application;

[0033] Figure 4 A schematic diagram of the lens module provided in the embodiments of this application;

[0034] Figure 5 This is a structural diagram of the vehicle lighting assembly provided in an embodiment of this application. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0036] In the field of optics, light is mainly classified into two categories based on color temperature: cool white light (high color temperature) and warm yellow light (low color temperature). Cool white light has a color temperature close to midday sunlight, approximately 5500K. This type of light can stimulate the cerebral cortex and increase alertness, so it is often used in vehicle lighting. On the other hand, warm yellow light, due to its wavelength characteristics falling between red and green light, exhibits stronger penetrating power in low-visibility environments such as rain, fog, and haze, helping to enhance visual clarity and safety.

[0037] While cool white light is sufficient for most everyday use and effectively enhances driver alertness, warm yellow light offers greater advantages in low-visibility conditions, such as at night or in rain, fog, or haze, as it provides better penetration and thus improves driving safety. However, the vast majority of electric two-wheelers on the market still primarily use cool white light. This means that drivers seeking better safety in these special conditions may need to take additional measures, such as modifying their own lights, which not only increases the complexity of use but may also negatively impact the overall user experience.

[0038] Therefore, this application provides a headlight color temperature adjustment system for a two-wheeled electric vehicle and a two-wheeled electric vehicle, which solves the above-mentioned problems existing in the prior art and can automatically adjust the ratio of warm yellow light and cool white light to improve riding safety.

[0039] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application. Furthermore, the embodiments and features in the embodiments of this application can be combined with each other without conflict.

[0040] like Figure 1 As shown, this application provides a headlight color temperature adjustment system for a two-wheeled electric vehicle, which is applied to a two-wheeled electric vehicle;

[0041] The system may include a rain sensor, a body controller, a microcontroller, a cold light drive circuit, a warm light drive circuit, and vehicle lighting components.

[0042] The first input terminal of the body controller is connected to the driver's terminal for communication; in other words, the terminal can establish a data communication connection with the first input terminal of the body controller through a wireless communication module.

[0043] The second input terminal of the vehicle body controller is electrically connected to the output terminal of the rain sensor, and the output terminal of the vehicle body controller is electrically connected to the input terminal of the microcontroller.

[0044] The first output terminal of the microcontroller is electrically connected to the input terminal of the cold light driving circuit, and the second output terminal of the microcontroller is electrically connected to the input terminal of the warm light driving circuit.

[0045] The input terminals of the vehicle lighting assembly are electrically connected to the output terminals of the cold light driving circuit and the warm light driving circuit, respectively.

[0046] Combination Figure 2 As shown, the driver triggers the headlight color temperature adjustment operation of the two-wheeled electric vehicle through the color temperature adjustment interface in the terminal's APP, and sends a headlight color temperature adjustment command to the vehicle body controller through the terminal; the command includes the ratio of warm yellow light and cool white light; the wireless communication module between the terminal and the vehicle body controller is a 4G module, which enables the terminal and the vehicle body controller to interconnect; the vehicle body controller receives the ratio of warm yellow light and cool white light sent by the terminal from the cloud platform.

[0047] The vehicle body controller can receive headlight color temperature adjustment commands sent from the terminal and transmit these commands to the microcontroller; alternatively, it can acquire real-time rainfall data from a rain sensor, and generate lighting control commands based on the configured correspondence between different rainfall amounts and different headlight levels. The rain sensor is located at the front windshield of the two-wheeled electric vehicle. This configuration helps to more accurately detect rainfall conditions, thereby allowing for timely adjustments to driving strategies or activation of corresponding lighting control commands, improving riding safety and comfort.

[0048] Specifically, the ratio of warm light to cool light in different light settings can be set as follows:

[0049] Level 1: Warm light 100%, cool light 0%;

[0050] Level 2: 80% warm light, 20% cool light;

[0051] Level 3: Warm light 60%, Cool light 40%;

[0052] 4 settings: 50% warm light, 50% cool light;

[0053] Level 5: Warm light 40%, Cool light 60%;

[0054] Level 6: Warm light 20%, Cool light 80%;

[0055] Level 7: Warm light 0%, Cool light 100%;

[0056] It should be noted that drivers can also... Figure 2 The adjustment interface shown allows you to set different levels of warm and cool light ratios. The leftmost setting on this interface is 100% warm light, and the rightmost setting is 100% cool light.

[0057] The microcontroller can drive the cold light drive circuit and / or warm light drive circuit to work based on the light control command or the vehicle headlight color temperature adjustment command, so as to control the adjustment of the vehicle headlight color temperature of the vehicle headlight assembly.

[0058] Furthermore, in combination Figure 3 As shown, A. The warm light driving circuit includes a first resistor R1, a second resistor R2, a first MOSFET MOS1, a warm light driving chip, a third resistor R3, a first rectifier diode, a warm yellow LED, a first current sensing resistor R-CS1, a first capacitor, a second capacitor, and a third capacitor.

[0059] One end of the first resistor R1 is connected to the first power supply, and the other end of the first resistor R1 is electrically connected to the source of the first MOSFET MOS1. The gate of the first MOSFET MOS1 is connected to one end of the second resistor R2, and the other end of the second resistor R2 is electrically connected to the first output terminal KZ-21 of the microcontroller MCU. The drain of the first MOSFET MOS1 is connected to the DIM port of the warm light driver chip. The warm light driver chip is a constant current driver chip that can dynamically adjust the drive current according to the voltage of the voltage adjustment port; specifically, the warm light driver chip is LZW318. The first power supply is 5V. In this configuration, the first resistor R1 limits the current through the first MOSFET MOS1, protecting the load and power supply. The second resistor R2 serves as a current limiter and protector, preventing excessive gate current from damaging the first MOSFET. When the signal at the first output terminal KZ-21 is high (e.g., close to 5V), there is a sufficient voltage difference between the gate and source of the first MOSFET MOS1, causing the first MOSFET MOS1 to conduct. At this time, the current can flow from the 5V power supply to the drain through the first resistor R1, then to the source through the first MOSFET MOS1, and finally reach the warm light driver chip. When the first output terminal KZ-21 signal is low (e.g., close to 0V), the gate of the first MOSFET MOS1 does not have enough voltage difference relative to the source, so the first MOSFET MOS1 remains in the off state, preventing current from flowing.

[0060] The VDD port of the warm light driver chip is electrically connected to the first end of the third resistor R3, and the second end of the third resistor R3 is electrically connected to the second power supply; wherein, the second power supply is 12V;

[0061] The second end of the third resistor R3 is also electrically connected to the negative terminal of the first rectifier diode and the positive terminal of the warm yellow LED. The positive terminal of the first rectifier diode and the negative terminal of the warm yellow LED are respectively electrically connected to the output port (OP port) of the warm light driver chip. The first end of the third resistor R3 is also grounded through the first capacitor. The warm yellow LED is a 2016 package, a single-core LED with a color temperature of 2700K and a power of 6W.

[0062] In one embodiment, the microcontroller MCU can be a single-chip microcomputer located inside the warm yellow LED. It mainly adjusts the voltage of the input constant current chip voltage adjustment port through the duty cycle of the first MOS transistor MOS1, thereby adjusting the output power of the warm yellow LED.

[0063] The CS port of the warm light driver chip is grounded through the first current sensing resistor R-CS1; the TOFF port of the warm light driver chip is grounded through the second capacitor, and the second power supply is also grounded through the third capacitor.

[0064] The GND port of the warm light driver chip is grounded.

[0065] B. The cold light driving circuit includes a fourth resistor R4, a fifth resistor R5, a second MOSFET MOS2, a cold light driving chip, a sixth resistor R6, a second rectifier diode, a cold yellow LED, a second current sensing resistor R-CS2, a fourth capacitor, a fifth capacitor, and a sixth capacitor;

[0066] One end of the fourth resistor R4 is connected to the first power supply, and the other end of the fourth resistor R4 is electrically connected to the source of the second MOSFET MOS2. The gate of the second MOSFET MOS2 is connected to one end of the fifth resistor R5, and the other end of the fifth resistor R5 is electrically connected to the second output terminal KZ-22 of the microcontroller MCU. The drain of the second MOSFET MOS2 is connected to the DIM port of the cold light driver chip. The cold light driver chip is a constant current driver chip that can dynamically adjust the drive current according to the voltage of the voltage adjustment port. The specific cold light driver chip is LZW318.

[0067] The VDD port of the cold light driver chip is electrically connected to the first end of the sixth resistor R6, and the second end of the sixth resistor is electrically connected to the second power supply.

[0068] The second terminal of the sixth resistor R6 is also electrically connected to the negative terminal of the second rectifier diode and the positive terminal of the cool white LED. The positive terminal of the second rectifier diode and the negative terminal of the cool white LED are respectively electrically connected to the output port (OP port) of the cold light driver chip. The first terminal of the sixth resistor R6 is also grounded through the fourth capacitor. The cool white LED uses a 2016 package and is a single-core LED with a color temperature of 6500K and a power of 6W.

[0069] In one embodiment, the microcontroller MCU can be a single-chip microcomputer located inside the cool white LED. The second MOS transistor MOS2 mainly adjusts the voltage of the input constant current chip voltage adjustment port through the duty cycle, thereby adjusting the output power of the warm and cool white LED.

[0070] The CS port of the cold light driver chip is grounded through the second current sensing resistor R-CS2; the TOFF port of the cold light driver chip is grounded through the fifth capacitor, and the second power supply is also grounded through the sixth capacitor.

[0071] The GND port of the cold light driver chip is grounded.

[0072] It should be noted that the GND ports of the warm light driving circuit and the cold light driving circuit provide a reference potential for the corresponding driving chips, ensuring the accuracy of current detection (CS port) and logic control (DIM port), and avoiding potential difference interference for the common ground design of the entire circuit. The TOFF ports of the warm light driving circuit and the cold light driving circuit can adjust the delay time of the corresponding MOSFET from turn-on to complete turn-off, and prevent voltage spikes caused by excessively fast switching speed.

[0073] Continue to combine Figure 3 As shown, the warm yellow LED and the cool white LED are each driven by two constant current driver chips, LZW3118. Each LZW3118's DIM port supports PWM dimming; when the input voltage is 0V, the output is turned off; when the input voltage exceeds 2.6V, it achieves a maximum output capacity of 100%. Furthermore, these chips have a current sampling port (CS port) for connecting an external current sensing resistor. By adjusting the resistance value of the current sensing resistor, the current intensity through each LED can be flexibly adjusted. This not only allows for precise control of the light brightness but also ensures stability and efficiency under different operating conditions.

[0074] In one example, the microcontroller receives lighting control commands or headlight color temperature adjustment commands from the vehicle body controller via the K-line. When the color temperature level specified in the received command is a (where 1≤a≤7 and a is an integer), the microcontroller determines the current ratio of warm yellow light to cool white light as D1 and D2 respectively (satisfying D1+D2=1) based on the correspondence between different levels and the warm / cool light ratio.

[0075] The microcontroller performs the following operations:

[0076] The first MOSFET MOS1 is controlled to output a voltage with a duty cycle of Da = (2.6 × D1) / 5 to the DIM port of the warm light driver chip;

[0077] At the same time, the second MOS transistor MOS2 is controlled to output a voltage with a duty cycle of Db = (2.6 × D2) / 5 to the DIM port of the cold light driver chip.

[0078] The warm light driver chip adjusts the current of the warm yellow LED to I·D1 according to the settings (here I represents the current value of the chip when it is at 100% output);

[0079] The cold light driver chip adjusts the current of the cold white LED to I·D2 accordingly.

[0080] Therefore, the total power of the combination of warm yellow LEDs and cool white LEDs remains constant, i.e., I 总 =I·D1 + I·D2 = I, ensuring that the total power consumption of both remains constant under different color temperature settings, thus achieving precise color temperature adjustment without affecting overall lighting brightness. This mechanism allows for flexible and accurate adjustment of the color temperature and brightness of the headlights, improving driving safety and comfort.

[0081] In some embodiments, the terminal's app supports enabling or disabling the automatic dimming function. When this function is enabled, on clear nights, the default setting is level 7, which is the full power output (100%) of the cool white LED.

[0082] When the rain sensor detects light rain (rain sensor detection duration > 10s), it will automatically switch to level 5; if it detects moderate rain, it will automatically adjust to level 3; and in the event of heavy rain, it will switch to level 1.

[0083] As the rainfall intensity gradually decreases, the system will gradually transition to a higher setting, progressively increasing the color temperature level to dynamically adapt to environmental changes. This ensures lighting penetration while enhancing riding safety and comfort.

[0084] The system provided in this application not only supports manual adjustment of the color temperature of the headlights of two-wheeled electric vehicles via a mobile app to meet personalized preferences and special needs, but also integrates an intelligent automatic dimming function that can automatically adjust the headlight color temperature based on environmental data from a rain sensor. This dual adjustment mechanism ensures that drivers receive the best visual experience and safety protection, whether in clear nights or in inclement weather conditions.

[0085] Specifically, when manual mode is selected, drivers can precisely control the headlight color temperature through an intuitive and easy-to-use app interface, allowing for stepless adjustment from warm yellow light to cool white light, perfectly adapting to the personalized needs of different drivers and various driving conditions. This enables each driver to customize the most suitable lighting effect according to their own preferences or specific environmental requirements.

[0086] Meanwhile, with the automatic dimming function activated, the system monitors real-time rainfall based on an integrated high-precision rain sensor and intelligently adjusts the lighting settings accordingly. Under good weather conditions, the default setting is the highest level (Level 7), providing full-power cool white light output for the clearest and brightest view. As the rainfall intensity changes, the system automatically switches to an appropriate level: Level 5 for light rain, Level 3 for moderate rain, and Level 1 for heavy rain to enhance light penetration and visibility. Furthermore, as the rain gradually subsides, the system gradually returns to a higher color temperature level, ensuring optimal lighting throughout the entire process.

[0087] This design philosophy, which combines manual flexibility with automated intelligent adaptation, not only greatly improves driving safety but also significantly enhances the driver's experience, truly achieving precise matching and support for the specific needs of each customer. Whether it's a professional rider seeking ultimate night vision or an ordinary driver needing to ensure safety in complex weather conditions, everyone can benefit from it.

[0088] Combination Figure 4 and Figure 5 As shown, the vehicle headlight assembly may include a concave lens 1, a circuit board 4, at least one warm yellow LED 3 and at least one cool white LED 2.

[0089] The warm yellow LED3 and the cool white LED2 are disposed on the first side of the circuit board 4, which is located inside the concave surface of the concave lens.

[0090] A warm yellow LED 3 and a cool white LED 2 are arranged side by side at a preset interval on the first side of the circuit board 4. The positions of the warm yellow LED 3 and the cool white LED 2 are very close, which ensures that the light forms a standard parabolic light pattern after passing through the lens.

[0091] Multiple warm yellow LEDs and multiple cool white LEDs can be arranged alternately at preset intervals on the first side of the circuit board. This method helps to achieve a good mixing of the two light sources, producing a more uniform and adjustable lighting effect.

[0092] In some embodiments, LEDs of the same type (such as all warm yellow LEDs or all cool white LEDs) are grouped together to form clusters, and then distributed on the first side of the circuit board in units of these clusters.

[0093] In another embodiment, multiple warm yellow LEDs and multiple cool white LEDs are arranged at equal angular intervals around the center point of a first side of the circuit board, so that the pattern appears identical from any direction. This arrangement can be circular, square, or other regular shapes. The even distribution of multiple LEDs around the center point also ensures that the light they produce radiates outwards relatively evenly, contributing to a more consistent lighting effect.

[0094] Different types of LEDs can also be placed alternately on both sides of one or more axes on the first side of the circuit board to form symmetry.

[0095] Furthermore, considering heat dissipation requirements, the rear heat sink is designed for simultaneous full-power operation of both LEDs. This design ensures that even under extreme conditions—when both warm yellow and cool white LEDs operate at maximum power—overheating due to insufficient heat dissipation is effectively avoided, ensuring system stability and reliability. This layout not only optimizes the lighting effect but also ensures the safety and durability of the equipment.

[0096] This application provides a headlight color temperature adjustment system for a two-wheeled electric vehicle. The system is applied to a two-wheeled electric vehicle, which includes a rain sensor, a vehicle body controller, a microcontroller, a cold light driving circuit, a warm light driving circuit, and a headlight assembly. A terminal establishes a data communication connection with the first input terminal of the vehicle body controller via a wireless communication module. The second input terminal of the vehicle body controller is electrically connected to the output terminal of the rain sensor, and the output terminal of the vehicle body controller is electrically connected to the input terminal of the microcontroller. The first output terminal of the microcontroller is electrically connected to the input terminal of the warm light driving circuit, and the second output terminal of the microcontroller is electrically connected to the input terminal of the cold light driving circuit. The input terminal of the headlight assembly is electrically connected to the output terminals of both the cold light driving circuit and the warm light driving circuit. This application achieves an organic unity of lighting performance and environmental adaptability through a dual-channel color temperature adjustment system, specifically manifested as follows:

[0097] Dynamic color temperature precise control: Based on the PWM signal output by the microcontroller, the driving current of the warm yellow LED and the cool white LED are independently controlled by the LZW3118 driver chip. The duty cycle can be continuously adjusted from 0.1% to 99.9% through preset programs, so that the color temperature can be steplessly changed in the range of 2700K-6500K to meet personalized lighting needs.

[0098] Enhanced penetration in adverse weather: When the rain sensor detects rain or fog (illuminance < 50 lux and humidity > 80%), the system automatically increases the current of the warm yellow light channel. By utilizing the main wavelength characteristics of warm yellow light, the effective illumination distance of the light in rain and fog is increased, the scattering rate is reduced, and the visibility of road signs is significantly improved.

[0099] High-brightness energy-saving mode for clear nights: In a clear environment (illuminance > 200 lux), the driving current of the cool white light channel increases to 4.5A (the warm light channel maintains 0.5A standby). Combined with the high luminous efficacy of 120lm / W of the cool white light with a color temperature of 6500K, the overall illuminance reaches 5800 lumens, saving 27% energy compared to the traditional single-color temperature solution. Moreover, the color rendering index (CRI) is > 85, accurately reproducing road surface details.

[0100] Anti-interference safety protection: Through the differentiated design of current sensing resistors R-CS1 and R-CS2, combined with the ±1% accuracy feedback of the CS pin of the driver chip, a precise balance of dual-channel current deviation <±3% is achieved, avoiding color temperature drift caused by current imbalance. When the circuit is abnormal (fluctuation >±15%), the fuse protection mechanism can cut off the fault circuit within 80ms.

[0101] This application also provides a two-wheeled electric vehicle, which includes a headlight color temperature adjustment system.

[0102] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0103] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0104] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0105] Although preferred embodiments of the present application have been described, those skilled in the art, once they have learned the basic inventive concept, can make other changes and modifications to these embodiments.

[0106] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the spirit and scope of the embodiments of this application. Therefore, if these modifications and variations to the embodiments of this application fall within the scope of the embodiments of this application and their equivalents, then the embodiments of this application are also intended to include these modifications and variations.

Claims

1. A headlight color temperature adjustment system for a two-wheeled electric vehicle, characterized in that, The system, applicable to two-wheeled electric vehicles, includes: a rain sensor, a vehicle body controller, a microcontroller, a cold light driving circuit, a warm light driving circuit, and a headlight assembly. The first input terminal of the vehicle body controller is communicatively connected to the driver's terminal; the second input terminal of the vehicle body controller is electrically connected to the output terminal of the rain sensor, and the output terminal of the vehicle body controller is electrically connected to the input terminal of the microcontroller; the first output terminal of the microcontroller is electrically connected to the input terminal of the warm light driving circuit, and the second output terminal of the microcontroller is electrically connected to the input terminal of the cold light driving circuit; the input terminals of the headlight assembly are electrically connected to the output terminals of both the cold light driving circuit and the warm light driving circuit. The vehicle body controller is used to receive the headlight color temperature adjustment command sent by the terminal and transmit the headlight color temperature adjustment command to the microcontroller; or, to obtain the rainfall in the environment where the two-wheeled electric vehicle is located in real time collected by the rain sensor, and generate a light control command according to the configured correspondence between different rainfall amounts and different light levels; and to transmit the light control command or the headlight color temperature adjustment command to the microcontroller. The microcontroller is used to drive the cold light driving circuit and / or the warm light driving circuit to work based on the light control command or the vehicle light color temperature adjustment command, so as to control the adjustment of the vehicle light color temperature of the vehicle light assembly.

2. The system as described in claim 1, characterized in that, The warm light driving circuit includes a first resistor, a second resistor, a first MOSFET, a warm light driving chip, a third resistor, a first rectifier diode, a warm yellow LED, a first current sensing resistor, a first capacitor, a second capacitor, and a third capacitor; One end of the first resistor is connected to the first power supply, the other end of the first resistor is electrically connected to the source of the first MOS transistor, the gate of the first MOS transistor is connected to one end of the second resistor, the other end of the second resistor is electrically connected to the first output terminal of the microcontroller, and the drain of the first MOS transistor is connected to the DIM port of the warm light driver chip. The VDD port of the warm light driver chip is electrically connected to the first end of the third resistor, and the second end of the third resistor is electrically connected to the second power supply. The second end of the third resistor is also electrically connected to the negative terminal of the first rectifier diode and the positive terminal of the warm yellow LED. The positive terminal of the first rectifier diode and the negative terminal of the warm yellow LED are respectively electrically connected to the output port of the warm light driver chip. The first end of the third resistor is also grounded through the first capacitor. The CS port of the warm light driver chip is grounded through a first current sensing resistor; the TOFF port of the warm light driver chip is grounded through a second capacitor, and the second power supply is also grounded through a third capacitor. The GND port of the warm light driver chip is grounded.

3. The system as described in claim 2, characterized in that, The cold light driving circuit includes a fourth resistor, a fifth resistor, a second MOSFET, a cold light driving chip, a sixth resistor, a second rectifier diode, a cold yellow LED, a second current sensing resistor, a fourth capacitor, a fifth capacitor, and a sixth capacitor; One end of the fourth resistor is connected to the first power supply, the other end of the fourth resistor is electrically connected to the source of the second MOS transistor, the gate of the second MOS transistor is connected to one end of the fifth resistor, the other end of the fifth resistor is electrically connected to the second output terminal of the microcontroller, and the drain of the second MOS transistor is connected to the DIM port of the cold light driver chip. The VDD port of the cold light driver chip is electrically connected to the first end of the sixth resistor, and the second end of the sixth resistor is electrically connected to the second power supply. The second end of the sixth resistor is also electrically connected to the negative terminal of the second rectifier diode and the positive terminal of the cool white LED. The positive terminal of the second rectifier diode and the negative terminal of the cool white LED are respectively electrically connected to the output port of the cold light driver chip. The first end of the sixth resistor is also grounded through the fourth capacitor. The CS port of the cold light driver chip is grounded through the second current sensing resistor; the TOFF port of the cold light driver chip is grounded through the fifth capacitor; and the second power supply is also grounded through the sixth capacitor. The GND port of the cold light driver chip is grounded.

4. The system as described in claim 3, characterized in that, Both the cold light driving chip and the cold light driving chip are constant current driving chips.

5. The system as described in claim 1, characterized in that, The rain sensor is mounted on the windshield at the front of the two-wheeled electric vehicle.

6. The system as described in claim 1, characterized in that, The vehicle lighting assembly includes a concave lens, a circuit board, at least one warm yellow LED and at least one cool white LED; The warm yellow LED and the cool white LED are disposed on the first side of the circuit board, and the first side is disposed inside the concave surface of the concave lens.

7. The system as described in claim 6, characterized in that, Multiple warm yellow LEDs and multiple cool white LEDs are arranged alternately at preset intervals on the first side of the circuit board.

8. The system as described in claim 6, characterized in that, Multiple warm yellow LEDs and multiple cool white LEDs are arranged at equal angular intervals around the center point of the first side of the circuit board.

9. The system as described in claim 6, characterized in that, A warm yellow LED and a cool white LED are arranged side by side at a preset interval on the first side of the circuit board.

10. A two-wheeled electric vehicle, characterized in that, The two-wheeled electric vehicle includes the system described in any one of claims 1-9.

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