Electrochemical Cell Charge Control for Faster Charging and Longer Life

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Solution Overview

Problem

Batteries have failed to compete successfully with combustion engines due to dissatisfaction with their longevity and performance.

Innovation Solution

Implementing an electrochemical cell management system with a controller that controls charging and discharging rates across varying state of charge ranges, including monitoring lithium loss and analyzing cycle history to optimize charging and discharging processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of stationary object

If conventional charging methods are used, then charging speed is maintained, but battery longevity and performance deteriorate

Engineering Contradiction:

Improvebattery longevityVSAvoidcharging speed

Core Design Contradiction:

Duration of action of stationary objectVSProductivity

Solution Approach 1:

The charging rate is dynamically adjusted based on the state of charge (SOC) of the battery. The controller implements variable charging rates across different SOC ranges, transitioning from higher rates at lower SOC to lower rates at higher SOC, thereby optimizing both charging speed and battery longevity through adaptive control

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the charging rate parameter as a function of state of charge. By implementing different charging rates in different SOC ranges (e.g., first rate for 0-80% SOC, second rate for 80-100% SOC), the system optimizes the balance between charging productivity and battery durability through parameter variation

Inventive Principle:

Principle #35Parameter changes

2Productivity

If high charging rates are applied throughout the entire charge cycle, then charging productivity is improved, but battery performance and longevity worsen

Engineering Contradiction:

Improvecharging rateVSAvoidbattery performance

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The charging cycle is segmented into multiple SOC ranges, each with its own optimized charging rate. The controller divides the charge cycle into segments (e.g., 0-80% SOC and 80-100% SOC) and applies appropriate charging rates to each segment, maximizing productivity while protecting battery reliability

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies higher charging rates partially (only in specific SOC ranges) rather than excessively throughout the entire cycle. By limiting high-rate charging to appropriate SOC windows and using lower rates when needed, the system achieves optimal productivity without compromising battery performance

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS12374913B2Charge/discharge management in electrochemical cells, including partial cycle control

Publication Date: 2025.07.29 SION POWER CORP

AI summary

Electrochemical cell and battery management systems are generally provided. The systems can comprise an electrochemical cell and a controller. In some cases, the controller can be used to control various aspects of the charge and/or discharge of the electrochemical cell. In some cases, the system can comprise one or more strings of cells.