Battery Cooling Control Device for Quiet Charging
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Solution Overview
Problem
Existing battery cooling systems generate noise during in-vehicle battery charging, particularly in quiet areas, causing discomfort to people around the vehicle.
Innovation Solution
A battery cooling control device that determines the quietness requirement level of a charging point using GPS and noise detection, adjusting the motor's rotation speed to minimize noise, especially in residential, nature reserve, or park areas, and during low sunlight or low background noise conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the blower rotation speed is increased to cool the battery efficiently, then cooling performance is improved, but operation noise increases causing discomfort to people around the vehicle
Solution Approach 1:
The patent applies dynamics by making the blower rotation speed adjustable based on environmental conditions. The control unit dynamically changes the rotation speed upper limit according to the determined quietness requirement level, transitioning between different operating modes (first driving mode for low noise areas, second driving mode for high noise areas) to optimize both cooling performance and noise reduction.
Solution Approach 2:
The patent changes the parameter of rotation speed based on the quietness requirement level. When a high quietness requirement is determined, the control unit sets a lower rotation speed upper limit; when a low quietness requirement is determined, a higher rotation speed upper limit is set. This parameter adjustment resolves the contradiction between cooling efficiency and noise generation.
2Object-generated harmful factors
If the blower rotation speed is limited to reduce noise, then comfort to people around the vehicle is improved, but cooling efficiency decreases
Solution Approach 1:
The system dynamically adjusts the rotation speed limit based on the determined quietness requirement level. By switching between first driving mode (higher speed for efficiency) and second driving mode (lower speed for noise reduction) according to environmental conditions, the system maintains optimal cooling efficiency while reducing noise when appropriate.
Solution Approach 2:
The control unit changes the rotation speed parameter based on environmental assessment. When the quietness requirement level is low, the rotation speed upper limit is set higher to maintain cooling efficiency. When the quietness requirement level is high, the limit is reduced to minimize noise, thus adapting cooling performance to environmental context.
3Temperature
If a fixed high rotation speed is used for battery cooling, then cooling performance is maintained, but noise causes discomfort in quiet areas such as residential zones
Solution Approach 1:
The patent applies local quality by determining the quietness requirement level based on the specific charging point location. The control unit adjusts the rotation speed upper limit according to the local environmental characteristics (residential area, park, nature reserve, etc.), making the cooling system's noise output adaptive to the local conditions rather than using a uniform high-speed setting everywhere.
Solution Approach 2:
The system transitions from a static fixed rotation speed approach to a dynamic adjustment mechanism. The control unit determines the quietness requirement level based on position information and time, then dynamically sets the appropriate rotation speed upper limit, allowing the cooling system to adapt its noise output to match the sensitivity of the surrounding environment.
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 solution effectively reduces operational noise of the cooling system, alleviating discomfort to individuals in quiet environments while maintaining effective battery cooling.
Implementation Method 1
position information on the charging point
Implementation Method 2
a motor when the in-vehicle battery is charged
Implementation Method 3
cooling unit that cools the in-vehicle battery
Data Source
AI summary
The quietness requirement level of a charging point is determined based on the position information on the charging point where an in-vehicle battery is fast charged by an external power supply. For an air conditioner that cools the in-vehicle battery through a drive power of an electric compressor when the in-vehicle battery is charged, an upper limit of a rotation speed of the electric compressor is set in such a way that the upper limit of the rotation speed of the electric compressor is set lower when the in-vehicle battery is charged by the external power supply at a charging point where the quietness requirement level is equal to or higher than a predetermined value than when the in-vehicle battery is charged by the external power supply at a charging point where the quietness requirement level is lower than the predetermined value.