Starter Battery Groups for High Power Grid Support
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery storage systems face challenges in efficiently feeding high levels of electrical power into supply networks, particularly due to limitations in discharge current and the inability to effectively utilize older batteries with reduced storage capacity.
Innovation Solution
The method involves forming battery groups using motor vehicle starter batteries or lead-acid batteries, which are discharged sequentially to provide high discharge currents over short periods, and connecting these groups in parallel to achieve high electrical power output. This approach allows for the use of batteries with different performance parameters, including older batteries, to supply a supply network with high discharge currents during peak loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If battery groups are discharged sequentially to provide high discharge currents, then electrical power output is improved, but discharge duration is limited to short periods
Solution Approach 1:
The battery storage system is divided into multiple battery groups (first battery group, second battery group, etc.), each capable of independent discharge. This segmentation allows sequential discharge operation where one battery group discharges while others are charging or resting, thereby extending the overall discharge duration while maintaining high power output from each active group
2Power
If motor vehicle starter batteries are used for high discharge current, then discharge current capability is improved, but storage capacity is reduced compared to traditional battery storage systems
Solution Approach 1:
The system dynamically manages the state of charge and discharge cycles of multiple battery groups. By continuously cycling batteries between charge and discharge states and utilizing the sequential operation of multiple groups, the system maximizes the utilization of available storage capacity while maintaining high discharge current capability required for power grid support applications
3Duration of action of stationary object
If older batteries with reduced storage capacity are utilized, then battery life is extended, but available storage capacity decreases
Solution Approach 1:
The system accepts and utilizes batteries with varying parameters including older batteries with reduced storage capacity. By incorporating battery groups with different capacity states and managing their discharge sequences, the system extends the operational life of the overall battery storage system while maintaining adequate power output for grid support functions
4Power
If battery groups are connected in parallel, then electrical power output is increased, but system complexity increases
Solution Approach 1:
The system is segmented into modular battery groups that can be independently managed but connected in parallel when needed. This modular segmentation allows the system to achieve high power output through parallel connection while maintaining manageable complexity through standardized group configurations and independent control of each group
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 solution enables the battery storage system to deliver high electrical power to supply networks by leveraging the high discharge capabilities of starter batteries, extending the life of older batteries and ensuring reliable power supply during peak demands or power failures.
Implementation Method 1
Battery storage systems can be equipped with batteries on an electrochemical basis for energy storage, with the electrical DC voltage of the batteries being converted into a suitable AC voltage
Implementation Method 2
the electrical DC voltage of the batteries being converted into a suitable AC voltage by means of inverters to feed electrical energy into a supply network designed as an AC voltage network
Data Source
Figure 1~2
AI summary
The invention relates to a battery storage system and a method for operating a battery storage system for providing high electrical power with a plurality of cyclically rechargeable batteries (B1 to Bx) grouped into several battery groups (BG11 to BGn4). According to the invention, the batteries (B1 to Bx) are formed by starter batteries, in particular by motor vehicle starter batteries and/or lead-acid starter batteries, wherein the battery groups (BG11 to BGn4) feed a supply network (2) with a high discharge current in immediate succession during short discharge periods (t1 to t30) that depend on the state of charge of the respective battery group (BG11 to BGn4), so that immediately successive short discharge periods (t1 to t30) result in a high discharge current (1) over a longer uninterrupted discharge period (T1).