Dual Energy Storage Control for Energy-Power Tradeoffs
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Solution Overview
Problem
Conventional energy storage systems face a tradeoff between high energy density and high power delivery, with single-chemistry systems often failing to optimally meet the complex power requirements of applications like electric vehicles, leading to compromised performance in either energy storage or power delivery.
Innovation Solution
A dual-energy storage system comprising a High Energy Unit (HEU) and a High Power Unit (HPU) is controlled independently to leverage their complementary attributes, using a Smart Control Algorithm (SCADA) to dynamically manage charging and discharging based on power needs, optimizing power distribution between the units to enhance performance and longevity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a single battery chemistry system is optimized for high energy density, then energy storage capacity is improved, but power delivery capability deteriorates
Solution Approach 1:
The energy storage system is segmented into two distinct battery chemistry systems: a high energy density battery system and a high power battery system. Each system is optimized for its specific function, with the high energy density system handling energy storage and the high power system handling power delivery, thereby resolving the contradiction between energy storage capacity and power delivery capability.
2Power
If a single battery chemistry system is optimized for high power delivery, then power output is improved, but energy density deteriorates
Solution Approach 1:
The energy storage system is segmented into two distinct battery chemistry systems: a high energy density battery system and a high power battery system. Each system is optimized for its specific function, with the high power system handling power delivery and the high energy density system handling energy storage, thereby resolving the contradiction between power output and energy density.
3Device complexity
If a single battery chemistry system attempts to handle both high energy storage and high power delivery, then system complexity is reduced, but performance optimization deteriorates
Solution Approach 1:
The energy storage system is segmented into two distinct battery chemistry systems: a high energy density battery system and a high power battery system. Each system is optimized for its specific function, with the high energy density system handling energy storage and the high power system handling power delivery, thereby resolving the contradiction between system complexity and performance optimization.
4Reliability
If a dual energy storage system is implemented, then performance optimization is improved, but device complexity deteriorates
Solution Approach 1:
The energy storage system is segmented into two distinct battery chemistry systems: a high energy density battery system and a high power battery system. Each system is optimized for its specific function, with the high energy density system handling energy storage and the high power system handling power delivery, thereby resolving the contradiction between performance optimization and device complexity.
Data Source
AI summary
An electrical storage system comprises a first energy storage system and a second energy storage system having a lower electrical energy density and a higher rated electrical power output capability than the first energy storage system, at least one electrical power sensor configured to sense over a plurality of time intervals, electrical power usage information for a load electrically coupled to the first energy storage system and the second energy storage system, and at least one computer processor programmed to determine based, at least in part, on the sensed electrical power usage information and a power requirement of the load in a current time interval, charging/discharging parameters for each of the first energy storage system and the second energy storage system, and control charging/discharging of each of the first and second energy storage systems in accordance with the determined charging/discharging parameters during the current time interval.