18038938. APPARATUS AND METHOD FOR ESTIMATING BATTERY CELL CAPACITY simplified abstract (LG Energy Solution, Ltd.)

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APPARATUS AND METHOD FOR ESTIMATING BATTERY CELL CAPACITY

Organization Name

LG Energy Solution, Ltd.

Inventor(s)

Jihoon Jeon of Daejeon (KR)

Taesoo Kim of Daejeon (KR)

Kyoung Min Bae of Daejeon (KR)

APPARATUS AND METHOD FOR ESTIMATING BATTERY CELL CAPACITY - A simplified explanation of the abstract

This abstract first appeared for US patent application 18038938 titled 'APPARATUS AND METHOD FOR ESTIMATING BATTERY CELL CAPACITY

Simplified Explanation

The method described in the patent application involves estimating the capacity of battery cells by analyzing discharge and charge curves, as well as patterns of transition between cells within a module.

  • Derive discharge curve for each battery cell in the module
  • Derive charge curve for each battery cell in the module
  • Calculate additional dischargeable capacity of a second battery cell based on discharge curve pattern of a first battery cell
  • Calculate additional chargeable capacity of the second battery cell based on charge curve transition of the first battery cell
  • Calculate the capacity of the second battery cell based on the additional dischargeable and chargeable capacities

Potential Applications

The technology can be applied in electric vehicles, energy storage systems, and portable electronic devices to accurately estimate battery cell capacity.

Problems Solved

1. Inaccurate estimation of battery cell capacity 2. Lack of efficient methods to assess individual battery cell performance within a module

Benefits

1. Improved battery management and performance optimization 2. Enhanced safety by identifying underperforming battery cells 3. Extended battery lifespan through targeted maintenance

Potential Commercial Applications

Optimizing battery usage in electric vehicles Enhancing energy storage system efficiency Improving battery life in portable electronic devices

Possible Prior Art

One possible prior art is a method that uses voltage and current measurements to estimate battery capacity, but it may not account for individual cell variations within a module.

Unanswered Questions

How does this method compare to traditional battery capacity estimation techniques?

This article does not provide a direct comparison to traditional methods of estimating battery capacity, such as voltage and current measurements. It would be interesting to see a side-by-side comparison of the accuracy and efficiency of this new method versus existing techniques.

What are the potential limitations of this method in real-world applications?

The article does not address any potential limitations or challenges that may arise when implementing this method in practical settings. It would be beneficial to explore factors such as scalability, cost-effectiveness, and compatibility with different battery chemistries.


Original Abstract Submitted

A method for estimating battery cell capacity may comprise deriving a discharge curve for each battery cell included in a module including a plurality of battery cells; deriving a charge curve for each battery cell included in the module; calculating an additional dischargeable capacity of a second battery cell based on a pattern of the discharge curve of a first battery cell; calculating an additional chargeable capacity of the second battery cell based on the transition of the charge curve of the first battery cell; and calculating a capacity of the second battery cell based on the additional dischargeable capacity and the additional chargeable capacity of the second battery cell.