SoC-Based Battery Mode Switching for Integrated ESS and UPS

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Solution Overview

Problem

Existing battery systems struggle to efficiently combine Energy Storage Systems (ESS) and Uninterruptible Power Supplies (UPS) due to instability in power supply, leading to separate components that occupy additional space and reduce reserve ratios during emergencies.

Innovation Solution

A battery system capable of supporting both ESS and UPS modes based on State-of-Charge (SoC), with a controller determining operation modes and a booster circuit to maintain stable voltage during high-speed charging and discharging.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate ESS and UPS components are used, then power supply stability is improved, but space occupancy increases and reserve ratio decreases

Engineering Contradiction:

Improvepower supply stabilityVSAvoidspace occupancy

Core Design Contradiction:

ReliabilityVSArea of stationary object

Solution Approach 1:

The patent combines ESS and UPS functions into a single battery system that can operate in multiple modes (ESS mode, UPS mode, and hybrid mode). The battery system includes a controller that dynamically switches between modes based on power supply conditions and SoC levels, eliminating the need for separate ESS and UPS components while maintaining power supply stability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The battery system is designed with multi-functionality to perform both ESS operations (energy storage and grid balancing) and UPS operations (uninterrupted power supply during outages). The system can adaptively switch between different operational modes to fulfill multiple functions with a single battery unit, optimizing space utilization while ensuring reliable power supply.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Speed

If high-speed charging and discharging is implemented, then power response speed is improved, but controller voltage stability deteriorates

Engineering Contradiction:

Improvecharging and discharging speedVSAvoidcontroller voltage stability

Core Design Contradiction:

SpeedVSStability of the object's composition

Solution Approach 1:

The patent introduces a booster circuit as an intermediary component between the battery and the controller. This booster circuit actively regulates and stabilizes the voltage supplied to the controller during high-speed charging and discharging operations, preventing voltage fluctuations that would otherwise occur due to the high current rates. The booster circuit acts as a buffer that maintains controller voltage within acceptable ranges even when the battery operates at high C-rates.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20260066684A1Battery system supporting plurality of operation modes according to soc

Publication Date: 2026.03.05 STANDARD ENERGY INC

AI summary

The present disclosure relates to a battery system supporting a plurality of operation modes according to the SoC. To this end, the battery system is characterized by comprising: one or more batteries supporting multiple operation modes for power storage or supply according to the state of charge (SoC); and a controller which determines an operation mode of the batteries among the plurality of operation modes according to the power supply state of a grid and the SoC of the batteries, wherein the batteries include a battery supporting an uninterrupted power supply (UPS) mode at an SoC at or below a first standard.