Battery Module Thermal Control With Distributed BMS Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery management systems struggle to maintain optimal temperature profiles for battery modules, leading to reduced reliability and safety due to temperature fluctuations.
Innovation Solution
A method for thermal management in energy storage systems, where a controller adjusts the operation of battery management system (BMS) nodes to maintain desired temperature profiles for individual battery modules, including determining temperature profile differences and implementing adjustments to achieve balanced temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing battery management systems are used, then the system structure is simple, but the temperature control precision is insufficient leading to reduced reliability
Solution Approach 1:
The system divides the battery management into independent BMS nodes, each capable of autonomous thermal management decisions for its associated battery module. This segmentation allows precise local temperature control while maintaining overall system reliability without requiring a fully centralized complex control architecture.
Solution Approach 2:
Each BMS node independently monitors and controls the temperature profile of its specific battery module based on actual temperature measurements and desired temperature profiles. This local quality approach ensures that each battery module receives customized thermal management appropriate to its specific operating conditions, enhancing reliability.
2Manufacturing precision
If existing battery management systems are used, then the device complexity is low, but the temperature profile control precision is poor
Solution Approach 1:
The system continuously monitors actual temperature profiles of battery modules and compares them against desired temperature profiles. Based on this feedback, each BMS node dynamically adjusts battery module operation to minimize temperature deviations, achieving precise temperature profile control through closed-loop feedback mechanisms.
Solution Approach 2:
The thermal management system dynamically adjusts battery module operation in real-time based on changing temperature conditions and operational requirements. This dynamic control allows the system to adapt to varying thermal conditions and maintain optimal temperature profiles throughout battery operation cycles.
3Reliability
If battery modules operate without thermal management, then the device complexity is minimal, but temperature fluctuations reduce safety
Solution Approach 1:
The system proactively monitors battery module temperatures and implements corrective thermal management actions before temperature deviations reach critical levels. By taking preliminary action to prevent extreme temperature fluctuations, the system enhances battery safety without requiring complex emergency response mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables precise control of battery module temperatures, enhancing reliability, safety, and performance by maintaining optimal operating conditions, thereby extending battery lifespan and ensuring safe operation.
Implementation Method 1
the first battery module is thermally coupled with the second battery module
Implementation Method 2
controlling at least the first BMS node and the second BMS node to transfer energy between the second battery module and the first battery module to increase temperature of at least the first battery module
Data Source
AI summary
A method for thermal management performed by a controller of an energy storage system, where the energy storage system includes at least a first battery module, a second battery module, a first battery management system (BMS) node, and a second BMS node. The first BMS node is configured to control operation of the first battery module, and the second BMS node is configured to control operation of the second battery module. The method includes (a) determining a first temperature profile difference representing a difference between an actual temperature profile of the first battery module and a desired temperature profile of the first battery module, (b) determining a first operation adjustment representing a desired change in operation of the first battery module for decreasing the first temperature profile difference, and (c) controlling the first BMS node to change operation of the first battery module according to the first operation adjustment.