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Bus-based automotive led matrix headlight controller

A controller and LED driver technology, which is applied in the direction of headlights, vehicle parts, lighting and heating equipment, etc., can solve the problems of high layout and wiring requirements, reduce thermal resistance, multiple lamp bead positions, etc., and achieve EMI performance optimization, reduce Small heat dissipation thermal resistance, the effect of improving signal immunity and reliability

Active Publication Date: 2021-12-21
ZHEJIANG LEAPMOTOR TECH CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that a large number of wiring harnesses and connectors are required in the above-mentioned prior art, and at the same time, it is easy to cause more EMI problems or there are relatively large restrictions on the position of the lamp beads (limited by the PCB), and the problem of high layout and wiring requirements , providing a bus-based automotive LED matrix headlight controller
The invention uses the method of welding FPC and aluminum substrate, the lamp beads are welded on the aluminum substrate, and multiple aluminum substrates are welded on the same FPC, which solves the problem that multiple lamp beads are not on the same plane; the lamp beads pass through the aluminum substrate and the radiator contact, reducing the thermal resistance

Method used

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  • Bus-based automotive led matrix headlight controller
  • Bus-based automotive led matrix headlight controller
  • Bus-based automotive led matrix headlight controller

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Embodiment

[0021] A bus-based automotive LED matrix headlight controller (see attached figure 1 To attach Figure 5 ), including the main control unit and the matrix control module for controlling the matrix control module, collecting temperature information and error information, controlling the turning light and communicating with the outside, the matrix control module includes the main control board, FPC flexible board and lamp beads board, the main control board uses FR4 base material, the lamp bead board uses aluminum substrate, the power and signal of the lamp bead board and the main control board are transmitted through the FPC flexible board, and the FPC flexible board is connected to the lamp bead board and the main control board by welding plate. The main control unit includes an interface circuit, an MCU, a CAN bus receiver, a low-power LED driver circuit, a matrix LED driver circuit, and a power management unit. The low-power LED driver circuit is connected to the MCU throug...

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Abstract

The invention relates to a bus-based automotive LED matrix headlight controller, which solves the deficiencies in the prior art. Communication main control unit and matrix control module. The matrix control module includes a main control board, an FPC flexible board and a lamp bead board. The main control board uses FR4 base material, and the lamp bead board uses an aluminum substrate. The power and signal of the control board are transmitted through the FPC flexible board, and the FPC flexible board is connected to the lamp bead board and the main control board by welding.

Description

technical field [0001] This patent relates to an automotive LED controller, in particular to a bus-based automotive LED matrix headlight controller. Background technique [0002] With the rapid development of electronic technology and Internet technology, it is an inevitable trend for the development of automobiles to be electrified, intelligent, and networked. Under this development background, there are higher requirements for the function, controllability and intelligence of the headlights. LED matrix headlights can use the road condition and vehicle condition information fed back by other sensors on the car body, and control the brightness and brightness of a single lamp bead. , to realize the far (near) light to adjust the brightness of different angles according to the road conditions, which is a very representative technology in line with the current development trend. [0003] Most of the existing technologies currently use on-board high-speed buses (such as SPI, I2...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21S41/141F21S41/19F21S45/47H05B45/30
CPCF21S41/141F21S41/19F21S45/47H05B44/00
Inventor 王玮琪张超陈树华
Owner ZHEJIANG LEAPMOTOR TECH CO LTD
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