Active Air Dam Control for Power Distribution Center Cooling
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Solution Overview
Problem
Hybrid vehicles face challenges in managing the high temperatures generated by the power distribution center due to ohmic heat and ambient conditions, which can reduce the lifespan of high voltage cables and connectors.
Innovation Solution
A method and system for controlling the temperature of the power distribution center by determining its temperature and adjusting the opening of an active air dam in response, thereby regulating heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the power distribution center operates in a hybrid vehicle, then high voltage power distribution is achieved, but significant ohmic heat is generated increasing temperature
Solution Approach 1:
The air dam is designed with movable flaps that can dynamically adjust their opening degree in response to temperature changes. The controller receives temperature signals from the power distribution center and actuates the air dam flaps to open or close, creating a dynamic thermal management system that adapts to real-time operating conditions
Solution Approach 2:
The system changes the physical parameter of air dam opening degree to control heat dissipation. By adjusting the opening degree parameter of the air dam flaps based on temperature readings, the system modulates the amount of air flow through the power distribution center, thereby controlling the thermal environment
2Reliability
If ambient temperature and engine heat are present, then vehicle operation is maintained, but temperature of power distribution center increases reducing component lifespan
Solution Approach 1:
The system takes preliminary action by monitoring temperature and proactively adjusting the air dam opening before excessive heat damage can occur. The controller continuously receives temperature signals and actuates the air dam flaps in advance to prevent temperature from reaching damaging levels, thereby protecting components from thermal degradation
Solution Approach 2:
The system implements a feedback control loop where the controller receives temperature signals from the power distribution center, processes this information, and adjusts the air dam opening degree accordingly. This closed-loop feedback mechanism ensures temperature remains within safe operating parameters to extend component lifespan
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
Effectively manages temperature fluctuations, extending the lifespan of power distribution center components and maintaining optimal vehicle performance by actively cooling the power distribution center through controlled air dam operation.
Implementation Method 1
regulating heat dissipation... actively cooling the power distribution center through controlled air dam operation
Implementation Method 2
high voltages and carry high currents that generate significant ohmic heat
Data Source
AI summary
A method and system for controlling a vehicle includes determining a temperature of a power distribution center and controlling an opening of an active air dam in response to the temperature of the power distribution center.