Battery Augmentation Planning for Aging ESS Discharge Demand

Solution Overview

Problem

Existing energy storage systems face challenges in efficiently managing the performance imbalance between old and new batteries, leading to unnecessary increases in the number of batteries required to meet discharge energy demands over time.

Innovation Solution

An apparatus and method for establishing an operation plan for a battery system that includes determining the initial number of first batteries based on a preset minimum required discharge energy, and sequentially incorporating second batteries at specific augmentation time points, based on expected degradation of the first batteries, to maintain optimal discharge performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a larger number of batteries are initially installed to satisfy discharge energy requirements over the operation period, then the discharge energy requirement is met, but the initial cost and system complexity increase

Engineering Contradiction:

Improvedischarge energy requirement satisfactionVSAvoidnumber of batteries

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The system performs preliminary assessment of battery degradation trends and predicts future discharge energy requirements. Based on these predictions, batteries are added to the system in advance at optimal time points before the degradation causes actual performance shortfalls, rather than waiting for the requirement to be violated.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The battery system transitions from a static configuration to a dynamic one where batteries are sequentially added based on real-time degradation monitoring and predicted future requirements. The system adaptively adjusts its composition over time to maintain optimal performance while minimizing total battery count.

Inventive Principle:

Principle #15Dynamics

2Quantity of substance

If new batteries are incorporated into the system during operation periods to reduce initial cost, then the initial investment is reduced, but performance imbalance occurs between old and new batteries

Engineering Contradiction:

Improveinitial number of batteriesVSAvoidperformance consistency

Core Design Contradiction:

Quantity of substanceVSStability of the object's composition

Solution Approach 1:

The system performs preliminary assessment of battery degradation trends and predicts future discharge energy requirements. Based on these predictions, batteries are added to the system in advance at optimal time points before the degradation causes actual performance shortfalls, rather than waiting for the requirement to be violated.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system continuously monitors the actual discharge energy and compares it with predicted values. When the actual discharge energy falls below the predicted threshold, the system triggers an alert to add new batteries, ensuring performance requirements are maintained while optimizing the timing of battery additions.

Inventive Principle:

Principle #23Feedback

3Reliability

If discharge of existing degraded batteries is terminated first, then the safety margin is maintained, but newly installed batteries cannot fully utilize their discharge capacity

Engineering Contradiction:

Improvesafety margin maintenanceVSAvoiddischarge energy utilization

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The system performs preliminary assessment of battery degradation trends and predicts future discharge energy requirements. Based on these predictions, batteries are added to the system in advance at optimal time points before the degradation causes actual performance shortfalls, rather than waiting for the requirement to be violated.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system changes the operational parameters of batteries based on their age and degradation state. Newer batteries are assigned higher discharge capacity allocations while older batteries operate at reduced capacity, dynamically adjusting the parameter distribution to maximize overall system productivity while maintaining safety margins.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20250038562A1Apparatus And Method For Establishing Operation Plan For Battery System Comprising Newly Installed Batteries

Publication Date: 2025.01.30 LG ENERGY SOLUTION LTD

AI summary

An apparatus for establishing an operation plan is an apparatus for establishing an operation plan for a battery system to augment old batteries with new batteries and may include at least one processor; and a memory configured to store instructions executed by the at least one processor to determine a number of first batteries initially installed in the battery system based on a preset minimum required amount of discharge energy; and derive operation plan information including a plurality of augmentation time points for second batteries to be sequentially incorporated into the battery system with the first batteries and a number of the second batteries to be incorporated for each of the plurality of augmentation time points, based on the preset minimum required amount of discharge energy and an expected degradation degree of the first batteries.