Battery Housing Temperature Control Based on Charge-Discharge Current
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Solution Overview
Problem
Existing battery thermal control systems fail to account for varying charge and discharge currents, leading to suboptimal temperature management and reduced battery lifetime.
Innovation Solution
An energy storage system with a temperature controller that determines a target temperature based on current levels and instructs a cooling system to maintain that temperature, using processors and memory devices to adjust for changing current conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single target temperature is used for battery thermal control, then the system structure is simple, but battery lifetime is not optimized under varying current conditions
Solution Approach 1:
The patent implements dynamic thermal control by adjusting the target temperature based on real-time current levels. The processor continuously monitors battery current and modifies the target temperature accordingly, transitioning from a static single-temperature approach to a dynamic multi-temperature strategy that adapts to varying operational conditions, thereby optimizing battery lifetime without requiring complex hardware changes
Solution Approach 2:
The system changes the target temperature parameter based on current level variations. Different current ranges correspond to different optimal target temperatures, allowing the thermal control system to adapt its operating parameters dynamically. This parameter adjustment strategy enables optimized battery lifetime across diverse operational scenarios while maintaining a relatively simple control architecture
2Reliability
If the battery temperature is kept constant, then the control system is simple, but the battery does not experience improved lifetime under different charge/discharge rates
Solution Approach 1:
The patent employs feedback control by continuously monitoring the battery's current level and using this information to adjust the target temperature. The processor receives real-time current data, determines the appropriate current range, and accordingly selects the optimal target temperature from a set of predefined temperatures. This closed-loop feedback mechanism enables the system to adapt to varying charge and discharge rates, optimizing battery lifetime across different operational conditions
Solution Approach 2:
The system transitions from a static constant-temperature control mode to a dynamic temperature adjustment mode. The target temperature becomes a dynamic variable that changes in response to current level variations, allowing the system to adapt its thermal management strategy to match the battery's instantaneous operational state and maximize lifetime under diverse current conditions
Data Source
AI summary
An energy storage system is disclosed. The energy storage system includes an insulated housing defining an interior chamber, a battery disposed within the interior chamber of the insulated housing, a cooling system configured to manage a temperature of the interior chamber of the insulated housing, and a temperature controller communicatively coupled to the cooling system and comprising at least one processor in communication with at least one memory device. The at least one processor is configured to determine a reference current level at the battery, compute, based on the reference current level, a target temperature for the interior chamber of the insulated housing, and instruct the cooling system to maintain the temperature in the interior chamber of the insulated housing at the target temperature.