Vehicle LED Lamp Cooling Control for Luminance Stability
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Solution Overview
Problem
The luminous efficiency of LED lamps in vehicles is adversely affected by high-temperature environments, leading to luminance decay, which compromises illumination performance and increases the risk of traffic accidents.
Innovation Solution
A heat dissipation method that dynamically adjusts cooling fan and liquid cooling states based on real-time vehicle lamp temperature, luminance, and environmental conditions, using a thermal superconductive tube for efficient heat transfer and a control module to manage heat dissipation parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If LED lamp operates at high power for long time, then illumination performance is improved, but luminance decay occurs due to high temperature
Solution Approach 1:
The patent implements dynamic heat dissipation control by adjusting cooling fan speed and liquid cooling flow rate based on real-time temperature monitoring. The control module continuously monitors LED module temperature and dynamically adjusts cooling parameters to maintain optimal operating temperature, preventing luminance decay while allowing high-power operation.
Solution Approach 2:
The system incorporates temperature sensors that continuously monitor the LED module temperature and feed this information back to the control module. Based on the feedback temperature data, the control module adjusts the heat dissipation system parameters (fan speed, liquid cooling flow) to maintain temperature within the optimal range, ensuring stable luminance output.
2Device complexity
If passive heat dissipation is used, then device complexity is reduced, but temperature control precision is insufficient
Solution Approach 1:
The system employs temperature sensors and a control module that automatically monitor and adjust heat dissipation parameters without manual intervention. The control module receives temperature feedback, processes the data, and autonomously adjusts fan speed and liquid cooling flow rate to maintain optimal LED module temperature, achieving precise temperature control through self-service operation.
3Temperature
If cooling fan speed is increased, then heat dissipation efficiency is improved, but energy consumption increases
Solution Approach 1:
The control module dynamically adjusts the cooling fan speed based on real-time LED module temperature measurements. When temperature is low, fan speed is reduced to minimize energy consumption. When temperature rises above optimal levels, fan speed is increased to enhance heat dissipation. This dynamic adjustment ensures optimal balance between heat dissipation efficiency and energy consumption.
Solution Approach 2:
The system changes the operating parameters of the cooling fan (rotation speed) based on temperature conditions. By varying the fan speed parameter according to actual heat dissipation needs, the system achieves efficient heat removal only when necessary, reducing overall energy consumption while maintaining effective temperature control.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method maintains stable light output, prolongs LED lamp service life, reduces maintenance costs, and enhances driving safety by preventing luminance decay and overheating.
Implementation Method 1
the thermal superconductive tube is configured to conduct heat generated by illumination of the LED module to the housing and the heat dissipation cavity
Implementation Method 2
starting a cooling fan to lower the vehicle lamp temperature
Implementation Method 3
starting liquid cooling to further lower the vehicle lamp temperature
Implementation Method 4
starting liquid cooling to further lower the vehicle lamp temperature
Data Source
AI summary
A heat dissipation method of a vehicle light-emitting diode (LED) lamp is provided. When a vehicle lamp is turned on, an instruction, a temperature, luminance, a heat dissipation state, and an external environmental temperature of the vehicle lamp are acquired, and a heat dissipation strategy is adjusted. If the temperature of the vehicle lamp is greater than a first temperature threshold, a fan is started for heat dissipation. If the temperature of the vehicle lamp is continuously greater than a second temperature threshold, even though the fan operates at a full speed, a liquid cooling system is activated for cooling. When the external temperature reaches a preset threshold, the fan and the liquid cooling system work simultaneously, so as to control the temperature within a safety range. A cooling fan state and a liquid cooling state are respectively adjusted through a rotational speed and a flow velocity.