Dual-Battery Energy Storage Control for Variable Route Charging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing energy storage systems for vehicles are inefficient in managing different energy requirements across varying route sections, leading to suboptimal battery capacity utilization and increased costs.
Innovation Solution
The energy storage system combines batteries with high and low C-rates, utilizing a control system to charge and discharge these batteries differently based on route section lengths, ensuring efficient energy management and extended battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If only high C-rate batteries are used to meet short segment charging requirements, then charging speed is improved, but total capacity and cost increase
Solution Approach 1:
The battery system is segmented into two distinct types: high C-rate batteries for rapid charging during short stops, and low C-rate batteries for sustained energy delivery during long segments. This segmentation allows each battery type to be optimized for its specific function, avoiding the need to oversize the entire battery system for peak charging speed requirements.
Solution Approach 2:
Different parts of the battery system have different properties: high C-rate batteries are positioned to handle charging operations during short stops, while low C-rate batteries provide baseline power and long-duration energy storage. Each battery type is strategically deployed based on its local quality characteristics to match route segment requirements.
2Quantity of substance
If only low C-rate batteries are used to provide high capacity, then cost is reduced, but charging speed during short stops deteriorates
Solution Approach 1:
The battery system is segmented into two distinct types: high C-rate batteries for rapid charging during short stops, and low C-rate batteries for sustained energy delivery during long segments. This segmentation allows each battery type to be optimized for its specific function, avoiding the need to oversize the entire battery system for peak charging speed requirements.
3Adaptability or versatility
If high C-rate batteries are used for all segments, then charging flexibility is improved, but battery replacement frequency and operational expenses increase
Solution Approach 1:
Different parts of the battery system have different properties: high C-rate batteries are positioned to handle charging operations during short stops, while low C-rate batteries provide baseline power and long-duration energy storage. Each battery type is strategically deployed based on its local quality characteristics to match route segment requirements.
Solution Approach 2:
The control system dynamically manages the two battery types based on real-time conditions such as remaining range, next stop distance, and route segment characteristics. This dynamic allocation optimizes battery usage patterns to extend service life while maintaining charging flexibility.
4Use of energy by moving object
If battery capacity is sized for long segments, then energy sufficiency is improved, but charging efficiency during short stops deteriorates
Solution Approach 1:
The battery system is segmented into two distinct types: high C-rate batteries for rapid charging during short stops, and low C-rate batteries for sustained energy delivery during long segments. This segmentation allows each battery type to be optimized for its specific function, avoiding the need to oversize the entire battery system for peak charging speed requirements.
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 allows for efficient charging and discharging cycles, reducing the need for frequent high-C-rate battery replacements, lowering operational expenses, and optimizing battery capacity utilization.
Implementation Method 1
the first battery is charged by the second battery on at least some of the remaining sections
Data Source
AI summary
An energy storage system for a vehicle is operated along a route having a plurality of sections of different lengths and is charged at stopping points between two successive sections. The system contains a first battery having a first charging-rate and a second battery having a second charging-rate, the second charging-rate being higher than the first charging-rate. The energy storage system further has a control system configured such that the first and the second batteries are charged at the stopping points, that the first and the second batteries are at least partly discharged on longer than average sections of the route, and that the first battery is charged by the second battery on at least some of the other sections. Furthermore, a vehicle having such an energy storage system, and a method for operating a vehicle having such an energy storage system are envisioned.