Vehicle Battery Discharge Limit Control Using SOH and Usage History
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current secondary battery management systems lack efficient mechanisms to optimize energy distribution between vehicles and the power grid, particularly in managing power transmission and reception based on vehicle usage history, battery health, and grid demand, leading to suboptimal energy utilization and incentives.
Innovation Solution
A control apparatus that communicates with vehicles and charging facilities to manage power transmission and reception, using algorithms to determine power limits based on vehicle usage history, battery health, and grid demand, allowing for dynamic adjustment of power flow to maximize energy utilization and incentives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If power transmission and reception between battery and power grid is allowed without limitation, then energy utilization efficiency is improved, but battery durability and reliability deteriorate
Solution Approach 1:
The control apparatus dynamically adjusts power transmission and reception limits based on real-time battery health status (SOH) and usage history. The system transitions from static warranty-based limitations to dynamic adjustment that adapts to actual battery conditions, allowing higher power flow when battery health is good and reducing limits when degradation is detected, thus resolving the contradiction between energy utilization and battery durability
Solution Approach 2:
The system changes the parameter of power limit values based on battery state of health (SOH) measurements and usage patterns. By continuously monitoring battery parameters and adjusting power limits accordingly, the system optimizes energy utilization while preventing excessive stress on the battery that would reduce its durability
2Reliability
If power transmission to power grid is limited during warranty period, then battery reliability is maintained, but energy utilization efficiency deteriorates
Solution Approach 1:
The system replaces static warranty period limitations with dynamic adjustment based on actual battery health status. Instead of uniformly limiting power transmission throughout the warranty period, the control apparatus continuously evaluates battery SOH and adjusts power limits in real-time, allowing high energy utilization when battery health is excellent while providing targeted protection when degradation occurs
Solution Approach 2:
The battery management system performs self-assessment of its own health status through SOH monitoring and usage history analysis. The control apparatus uses this self-diagnostic capability to autonomously adjust power transmission limits, eliminating the need for conservative external limitations while maintaining battery reliability through intelligent self-regulation
3Reliability
If vehicle usage history is considered for power control, then battery durability is improved, but control system complexity increases
Solution Approach 1:
The control apparatus leverages existing multi-functional battery management components (SOH estimation modules, usage monitoring systems already present in modern vehicles) to implement usage-based power control. By reusing existing data infrastructure and processing capabilities, the system extends battery durability through usage-aware control without adding significant system complexity
Data Source
AI summary
There is provided a control apparatus including: a guarantee application determination unit configured to determine whether a battery included in a moving object satisfies a predetermined guarantee application condition; and a limitation unit configured to limit an amount of power which is discharged from the battery to an outside of the moving object, to be lower than or equal to a first limit value, when the battery satisfies the guarantee application condition, in which the limitation unit is configured to limit, or not to limit the amount of power which is discharged from the battery to the outside of the moving object, to be lower than or equal to a second limit value which is higher than the first limit value, when the battery does not satisfy the guarantee application condition.