Vehicle Battery Peak Control for High-Voltage Load Protection
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Solution Overview
Problem
Electric vehicles experience peak phenomena in high voltage battery output due to rapid changes in power demand, which can damage connected high-voltage loads, necessitating a method to improve peak management.
Innovation Solution
An apparatus and method for controlling a battery system that includes a processor to detect peaks in high voltage battery output, identify target loads, and implement peak reduction control periods to manage power consumption, thereby reducing the peak and ensuring user convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the high voltage battery supplies power rapidly to meet sudden power demand changes, then the vehicle's acceleration and air conditioning response are improved, but peak phenomena occur that can damage connected high-voltage loads
Solution Approach 1:
The control apparatus performs preliminary detection of peak phenomena in battery output and identifies target loads before damage occurs. By detecting the peak condition and determining which load is consuming the most power, the system can preemptively adjust power consumption to prevent damage while maintaining rapid response capability.
Solution Approach 2:
The system continuously monitors battery output power and load power consumption, using this feedback to dynamically adjust the power consumption of target loads during peak phenomena. The control apparatus compares real-time power consumption data with detected peak conditions and adjusts target load power consumption accordingly, creating a closed-loop control system that prevents load damage while maintaining vehicle performance.
2Reliability
If the battery output is controlled to prevent peak damage, then load protection is improved, but the vehicle's ability to respond rapidly to acceleration and air conditioning demands is reduced
Solution Approach 1:
The control apparatus dynamically adjusts the power consumption of target loads based on real-time detection of peak phenomena. Rather than using fixed control limits, the system adapts its control strategy according to the severity and duration of detected peaks, allowing rapid power response under normal conditions while providing protective control only when peak phenomena are detected, thus maintaining both reliability and speed.
3Reliability
If the control system continuously monitors and adjusts power consumption to manage peaks, then load protection is improved, but the system complexity increases
Solution Approach 1:
Instead of controlling all loads uniformly, the control apparatus identifies and applies control only to the specific target load that is consuming the most power during a detected peak phenomenon. This localized control approach protects against peak damage while minimizing the complexity of the control system, as only one load requires active management at any given time rather than all loads simultaneously.
Data Source
AI summary
An apparatus for controlling a battery system includes a high voltage battery mounted on a vehicle, high voltage loads electrically connected to the high-voltage battery, and a processor. The processor determines a peak at which an instantaneous output of the high voltage battery exceeds a preset reference range, determines a target load among the high voltage loads electrically connected to the high voltage battery, and enters a peak reduction control period for reducing the peak to control power consumption of the target load.