CN-224218553-U - Car light control device and car light system

CN224218553UCN 224218553 UCN224218553 UCN 224218553UCN-224218553-U

Abstract

The application relates to a car lamp control device and a car lamp system, which comprise a region controller and a car lamp controller, wherein the car lamp controller comprises a step-up and step-down circuit and a driving circuit, the output end of the region controller is respectively connected with the input end of the step-up and step-down circuit, the input end of the driving circuit and the input end of a load, the region controller is used for issuing a car lamp control instruction, the output end of the step-up and step-down circuit is connected with the input end of the load, the step-up and step-down circuit is used for providing converted power supply voltage for the load, the load comprises an LED lamp module, the output end of the driving circuit is connected with the input end of the load, and the driving circuit is used for driving the load. The application solves the problems of complex internal circuit structure and higher cost of the car lamp controller in the related technology.

Inventors

YANG ZIXUE
LIU DONGHUI
SHE ZHIWEI

Assignees

浙江吉利控股集团有限公司
吉利汽车研究院（宁波）有限公司

Dates

Publication Date: 20260508
Application Date: 20250515

Claims (10)

1. A car lamp control device is characterized by comprising an area controller and a car lamp controller, wherein the car lamp controller comprises a step-up and step-down circuit and a driving circuit, The output end of the area controller is respectively connected with the input end of the step-up/step-down circuit, the input end of the driving circuit and the input end of the load, and the area controller is used for getting off a lamp control instruction; the output end of the buck-boost circuit is connected with the input end of the load, the buck-boost circuit is used for providing the converted power supply voltage for the load, and the load comprises an LED lamp module; the output end of the driving circuit is connected with the input end of the load, and the driving circuit is used for driving the load.
2. The vehicle lamp control device of claim 1, wherein the drive circuit comprises a high side driver and a high side switch; The input end of the high-side driver is connected with the area controller through a high-speed communication protocol interface; the output end of the high-side driver is connected with the high-side switch; the high-side switch is used for switching on or off a path of current flowing to the load under the control of the high-side driver.
3. The vehicle lamp control device according to claim 1, wherein the step-up/down circuit includes a step-up converter and a step-down converter; The input ends of the boost converter and the buck converter are respectively connected with the regional controller through different high-speed communication protocol interfaces; the output ends of the boost converter and the buck converter are respectively connected with the input end of the load through different IO/AD interfaces.
4. The vehicle lamp control device according to claim 1, wherein the step-up/down circuit includes a step-up converter and a step-down converter; the boost converter and the buck converter are packaged in a first chip, and the first chip comprises a first high-speed communication protocol interface and a first IO/AD interface; The input ends of the boost converter and the buck converter are respectively connected with the regional controller through the first high-speed communication protocol interface; The output ends of the boost converter and the buck converter are respectively connected with the input end of the load through the first IO/AD interface.
5. The vehicle lamp control device according to claim 3 or 4, wherein the driving circuit includes a motor driving chip; the load further comprises a motor moving part; The input end of the motor driving chip is connected with the output end of the buck converter, the output end of the motor driving chip is connected with the input end of the motor moving part, and the motor moving part is connected with the LED lamp module; and the motor driving chip is used for driving the motor moving part to move so as to adjust the irradiation pitch angle of the LED lamp module.
6. The vehicle lamp control device of claim 1, wherein the buck-boost circuit and the drive circuit are packaged in a second chip, the second chip including a second high speed communication protocol interface, a second IO/AD interface, and a third IO/AD interface; the step-up and step-down circuit and the driving circuit receive the car lamp control instruction of the area controller through the second high-speed communication protocol interface; The step-up/step-down circuit is connected with the load through the second IO/AD interface; The driving circuit is connected with the load through the third IO/AD interface.
7. The vehicle lamp control device according to claim 1, wherein the zone controller includes: The processor is used for generating the car lamp control instruction; the memory is connected with the processor and used for storing data; And the high-speed communication protocol interface is used for transmitting the car lamp control instruction.
8. A vehicle lamp system comprising a load and the vehicle lamp control device of any one of claims 1 to 7, the load being connected to the vehicle lamp control device, the load comprising an LED lamp module.
9. The vehicle lamp system of claim 8, wherein the load further comprises a matrix chip and a linear chip, the LED lamp module comprising a high current LED unit and a low current LED unit; The input end of the matrix chip is connected with a high-side switch in the car lamp control device, the output end of the matrix chip is connected with the input end of the LED lamp module, and the matrix chip is used for controlling the on-off state and brightness of the high-current LED unit; the input end of the linear chip is connected with the high-side switch, the output end of the linear chip is connected with the input end of the LED lamp module, and the linear chip is used for controlling the on-off state and brightness of the low-current LED unit.
10. The vehicle lamp system of claim 8, wherein the load further comprises a temperature sensor and/or a fan, wherein, The input end of the temperature sensor is connected with a step-up/step-down circuit in the car lamp control device; The input end of the fan is connected with a high-side switch in the car lamp control device.

Description

Car light control device and car light system Technical Field The application relates to the field of vehicle exterior lamp control, in particular to a vehicle lamp control device and a vehicle lamp system. Background Fig. 1 is a schematic structural diagram of a conventional vehicle lamp controller, as shown in fig. 1, which mainly comprises a buck-boost circuit, a driving circuit and a micro control unit (Microcontroller Unit, abbreviated as MCU). Each micro-control unit is connected with the corresponding LED lamp module, and each micro-control unit is provided with a corresponding step-up and step-down circuit and a driving circuit. The LED lamp module comprises a voltage boosting circuit, a driving circuit, a micro control unit and a micro control unit, wherein the voltage boosting circuit is used for providing constant current or constant voltage for the LED lamp module, the driving circuit is used for driving the LED lamp module, and the micro control unit is used for sending control instructions to the voltage boosting circuit and the driving circuit so as to control the LED lamp module. Because each LED lamp module needs to be configured with an independent MCU, and each MCU needs to be provided with an adaptive buck-boost circuit and a driving circuit, the hardware circuit structure is complex, and the cost is high. At present, aiming at the problems of complex internal circuit structure and higher cost of a car lamp controller in the related technology, no effective solution is proposed yet. Disclosure of utility model The embodiment of the application provides a car lamp control device and a car lamp system, which at least solve the problems of complex internal circuit structure and higher cost of a car lamp controller in the related art. In a first aspect, an embodiment of the present application provides a vehicle lamp control device, including an area controller and a vehicle lamp controller, where the vehicle lamp controller includes a step-up and step-down circuit and a driving circuit, The output end of the area controller is respectively connected with the input end of the step-up/step-down circuit, the input end of the driving circuit and the input end of the load, and the area controller is used for getting off a lamp control instruction; the output end of the buck-boost circuit is connected with the input end of the load, the buck-boost circuit is used for providing the converted power supply voltage for the load, and the load comprises an LED lamp module; the output end of the driving circuit is connected with the input end of the load, and the driving circuit is used for driving the load. In some of these embodiments, the drive circuit includes a high side driver and a high side switch; The input end of the high-side driver is connected with the area controller through a high-speed communication protocol interface; the output end of the high-side driver is connected with the high-side switch; the high-side switch is used for switching on or off a path of current flowing to the load under the control of the high-side driver. In some embodiments, the buck-boost circuit includes a boost converter and a buck converter; The input ends of the boost converter and the buck converter are respectively connected with the regional controller through different high-speed communication protocol interfaces; the output ends of the boost converter and the buck converter are respectively connected with the input end of the load through different IO/AD interfaces. In some embodiments, the buck-boost circuit includes a boost converter and a buck converter; the boost converter and the buck converter are packaged in a first chip, and the first chip comprises a first high-speed communication protocol interface and a first IO/AD interface; The input ends of the boost converter and the buck converter are respectively connected with the regional controller through the first high-speed communication protocol interface; The output ends of the boost converter and the buck converter are respectively connected with the input end of the load through the first IO/AD interface. In some embodiments, the driving circuit includes a motor driving chip; the load further comprises a motor moving part; The input end of the motor driving chip is connected with the output end of the buck converter, the output end of the motor driving chip is connected with the input end of the motor moving part, and the motor moving part is connected with the LED lamp module; and the motor driving chip is used for driving the motor moving part to move so as to adjust the irradiation pitch angle of the LED lamp module. In some embodiments, the buck-boost circuit and the drive circuit are packaged in a second chip, the second chip including a second high-speed communication protocol interface, a second IO/AD interface, and a third IO/AD interface; the step-up and step-down circuit and the driving circuit receive the car lamp control instruction