Smartcell Battery Thermal Control for EV Power Balancing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electric vehicle battery systems face challenges due to temperature sensitivity, leading to performance degradation, safety risks, and inefficiencies in power management, particularly in extreme temperatures, which current thermal management systems fail to address effectively.
Innovation Solution
A smartcell battery system with local controllers and intelligent scheduling logic optimizes battery cell usage by prioritizing cooler cells, adjusting operating modes, and minimizing external heating/cooling, thereby maintaining a target thermal window and satisfying power demands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional thermal management systems are used to control battery temperature, then battery safety is improved, but system complexity and energy consumption increase
Solution Approach 1:
The battery management system automatically monitors temperature, state of charge, and power demands of individual battery cells, then dynamically adjusts their operational status without external intervention. The system prioritizes cooler cells and adjusts operating modes based on real-time thermal conditions, enabling the battery system to self-regulate its thermal state while reducing degradation and energy consumption.
2Power
If battery cells are operated in extreme temperatures, then power output requirements are met, but performance degradation and safety risks increase
Solution Approach 1:
The system dynamically adjusts the operational status of individual battery cells based on real-time monitoring of temperature, state of charge, and power demands. By continuously adapting which cells are active and their operating modes, the system optimizes power output while maintaining cells within safe thermal windows, preventing both overheating and extreme cold conditions that cause degradation.
Solution Approach 2:
The system changes operational parameters such as state of charge targets, power output limits, and thermal management strategies based on real-time battery cell conditions. When cells approach thermal boundaries, the system adjusts their operating parameters to maintain performance while preventing degradation, allowing flexible adaptation to varying power demands and thermal conditions.
3Reliability
If external heating and cooling systems are used to maintain battery temperature, then battery performance is improved, but energy consumption increases
Solution Approach 1:
The system utilizes the natural thermal characteristics of battery cells by prioritizing cooler cells for operation, allowing warmer cells to rest and cool down passively. This self-organizing approach leverages the existing thermal gradients within the battery pack without requiring active cooling systems, thereby maintaining performance while minimizing energy consumption for thermal management.
Data Source
AI summary
Control strategies for an electric vehicle battery system that incorporate thermal management are described. In an example, a method comprises employing, by a system operatively coupled to at least one processor, a smartcell battery system to supply power to one or more electrical systems of an electric vehicle, the smart cell battery system comprising a plurality of battery cell units respectively comprising local controllers that control operations of respective battery cells connected to the local controllers. The method further comprises determining, by the system, control information for each of the battery cell units that results in balancing bringing the respective battery cells within a target thermal window and satisfying power demands of the one or more electrical systems, and directing, by the system, the local controllers to control the operations of the respective battery cells in accordance with the control information.