EV Battery Charging Noise Control via Adaptive Cooling
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Solution Overview
Problem
Existing methods for charging high-voltage batteries in electric vehicles often result in excessive noise due to cooling requirements, limiting charging power and time, especially in residential areas where noise regulations are stringent, leading to restricted charging opportunities.
Innovation Solution
A method that determines positional data to adjust the cooling device's noise emission based on noise emission maps, allowing for adaptive cooling power management to maintain within noise limits, thereby optimizing charging time while adhering to noise regulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the cooling device is operated at high cooling power to cool the accumulator during charging, then the charging time is reduced, but the noise emission increases beyond permissible limits in residential areas
Solution Approach 1:
The cooling power of the cooling device is made dynamically adjustable based on the determined maximum value for noise emission. The control unit adapts the cooling power in real-time according to the vehicle's location and applicable noise regulations, allowing the system to operate at high cooling power in permissive zones (reducing charging time) and low cooling power in restrictive zones (reducing noise emission).
Solution Approach 2:
The system changes the operating parameters of the cooling device based on external conditions (noise emission limits). By adjusting the cooling power parameter according to the determined maximum noise emission value, the system optimizes the trade-off between charging speed and noise pollution, enabling fast charging when permitted and quiet operation when required.
2Object-generated harmful factors
If the cooling power is reduced to limit noise emission in residential areas, then noise regulations are complied with, but the charging time increases
Solution Approach 1:
The system performs preliminary determination of the maximum noise emission value based on positional data before initiating or adjusting the charging process. By knowing the applicable noise limits in advance, the control unit can pre-adjust the cooling power to an appropriate level, avoiding unnecessary delays while ensuring compliance with local noise regulations.
Solution Approach 2:
The system uses feedback from the determined maximum noise emission value to continuously adjust the cooling power during charging. The control unit monitors the noise emission limits and adapts the cooling device operation accordingly, ensuring optimal charging speed within permissible noise boundaries.
Data Source
AI summary
A method for charging an accumulator of an electrically drivable motor vehicle, wherein a cooling device of the motor vehicle is operated in order to cool the accumulator during the charging of the accumulator, wherein the motor vehicle emits noise in dependence on the cooling power of the cooling device, including the steps: determining positional data for a position of the motor vehicle during charging, determining a maximum value for a noise emission on the basis of the positional data and while taking into account noise emission positional data, and taking into account the maximum value for noise emission with respect to the charging of the accumulator.