Dynamic Charging Curve Controller for Electric Vehicle Battery Packs
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Solution Overview
Problem
Current direct current charging of electric vehicle battery packs is controlled by predefined charging curves, which may not optimize charging time based on dynamic factors like location, state of charge, and environmental conditions, potentially leading to suboptimal battery health and charging efficiency.
Innovation Solution
A controller unit and system that includes location and battery sensors, along with a communication component, determine a target location and state of charge information to dynamically adjust the charging request sent to a direct current charging device, altering the charging curve to optimize charge time and avoid thermal degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If predefined charging curves are used for DC fast charging, then battery safety and basic charging function are ensured, but charging time is extended and charging efficiency is reduced
Solution Approach 1:
The patent implements dynamic charging curve adjustment by continuously monitoring battery state of charge, temperature, and location data. The controller modifies charging parameters in real-time based on these varying conditions, transitioning from static predefined curves to dynamic adaptive charging profiles that optimize charging speed while maintaining safety
Solution Approach 2:
The system changes charging parameters (current, voltage, power levels) based on real-time battery state and environmental conditions. By adjusting these parameters dynamically rather than following fixed curves, the system achieves faster charging times while preventing thermal degradation through adaptive parameter modification
2Loss of time
If higher charging power is applied to reduce charging time, then charging speed improves, but thermal degradation increases and battery health deteriorates
Solution Approach 1:
The patent employs feedback mechanisms by continuously monitoring battery temperature, state of charge, and charging rate. This real-time feedback allows the controller to adjust charging power levels dynamically, reducing power when thermal limits are approached and increasing power when conditions permit, thereby minimizing thermal degradation while optimizing charging time
Solution Approach 2:
The system transitions from static high-power charging to dynamic power adjustment based on real-time thermal and electrical conditions. The charging power is continuously adapted to maintain optimal charging speed while staying within safe thermal boundaries, preventing battery damage
3Productivity
If location-based dynamic charging control is implemented, then charging efficiency and battery life are optimized, but system complexity increases
Solution Approach 1:
The patent integrates multiple functions into a single controller unit that handles location data processing, battery state monitoring, charging curve generation, and real-time parameter adjustment. This multi-functional approach consolidates complexity into one coordinated system rather than requiring separate dedicated systems for each function
Solution Approach 2:
The system autonomously determines optimal charging parameters by processing its own sensor data (location, battery state, environmental conditions) without requiring external intervention. The controller self-adjusts charging curves based on real-time inputs, reducing the need for complex external control systems while maintaining high charging efficiency
Data Source
AI summary
Various disclosed embodiments include illustrative controller units, systems, vehicles, and methods. In an illustrative embodiment, a controller unit includes a communication component, a controller and a memory. The communication component is configured to communicate with a direct current charging device. The controller is configured to communicate with the communication component and the memory. The memory is configured to store computer-executable instructions configured to cause the controller to determine a target location, receive location information of a vehicle, receive state of charge information, determine a charging request in response to the target location, the location information of the vehicle, and the state of charge information, and send, via the communication component, the determined charging request to the direct current charging device connectable to the vehicle.