Autonomous Driving Controller Cooling via Chiller Integration
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Solution Overview
Problem
The existing cooling systems for autonomous driving controllers in vehicles face challenges such as increased cost, space constraints, and complex refrigerant layouts, leading to inadequate cooling performance, which can result in malfunctions and safety risks due to differing coolant temperature guarantees and power consumption issues when coupled with battery cooling systems.
Innovation Solution
A cooling system control method that integrates a chiller, reservoir tank, water pump, and sub-expansion valve with the air-conditioning system to efficiently heat-exchange coolants, allowing for independent cooling of the autonomous driving controller based on real-time temperature monitoring and adjustment of compressor RPM and sub-expansion valve opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a separate cooling system is added for the autonomous driving controller, then the cooling performance is improved, but the cost and device complexity increase
Solution Approach 1:
The patent merges the autonomous driving controller cooling system with the existing battery cooling system by using a shared coolant circulation path. The chiller unit cools coolant that flows through both the autonomous driving controller and the battery, eliminating the need for separate cooling systems and reducing overall system complexity while maintaining adequate cooling performance for both components.
2Area of stationary object
If the cooling systems are coupled in series, then the space constraint is resolved, but the cooling performance deteriorates when both systems operate simultaneously
Solution Approach 1:
The patent implements dynamic control of the coolant circulation system with multiple pumps that can operate independently or in combination. The first pump circulates coolant through the autonomous driving controller, while the second pump circulates coolant through the battery. This dynamic configuration allows flexible adjustment of coolant flow distribution based on real-time cooling demands, ensuring optimal cooling performance for both systems when operated simultaneously while maintaining a compact series-coupled layout.
3Reliability
If the cooling system operates based on low guaranteed temperature, then power consumption increases, but cooling reliability is improved
Solution Approach 1:
The patent incorporates temperature sensors and control units that continuously monitor the temperatures of both the autonomous driving controller and the battery. Based on real-time temperature feedback, the control system intelligently adjusts pump operations and coolant flow distribution, activating cooling only when and where needed. This feedback-driven approach ensures reliable cooling while minimizing unnecessary power consumption by avoiding continuous operation at fixed low temperatures.
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
This method ensures stable and efficient cooling of the autonomous driving controller, minimizing power consumption and preventing operational failures, thereby ensuring driver and pedestrian safety by maintaining optimal temperature and reducing the complexity of refrigerant layouts.
Implementation Method 1
a cooling system control method for an autonomous driving controller which heat-exchanges coolants in conjunction with an air-conditioning system
Implementation Method 2
a high-temperature and high-pressure gas phase refrigerant compressed by the compressor is condensed through the condenser and then is evaporated in the evaporator
Implementation Method 3
a high-temperature and high-pressure gas phase refrigerant compressed by the compressor is condensed through the condenser
Data Source
AI summary
A cooling system control method for an autonomous driving controller may include detecting the temperature of the autonomous driving controller by the controller when a vehicle is driving; determining whether a current temperature of the autonomous driving controller is lower than a target temperature by the controller; and terminating the controlling of the cooling system if the condition is satisfied in determining whether the current temperature of the autonomous driving controller is lower than the target temperature.