Battery Management System Using RFID History for Reuse Decisions
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Solution Overview
Problem
Current battery management systems lack effective criteria for deciding the reuse, recycling, or rebuilding of recovered batteries from vehicles and large appliances, leading to inefficiencies and increased costs due to the need for retesting and lack of clear decision-making processes.
Innovation Solution
A battery management system that includes an identification information storage unit, a measurement unit, a transmitter, a receiver, and a decision unit to assess the state of batteries based on historical data, allowing for the determination of battery pack or cell reusability without the need for retesting, thereby deciding on the best handling method efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If battery information is stored in RFID tag and read when vehicle is discarded, then battery operation history can be obtained, but no specific decision criteria are provided for determining reuse or recycling
Solution Approach 1:
The patent transforms the undecidable battery status into a clear decision by changing the parameter from raw operation history data to a binary classification (reusable/unusable) based on whether the battery meets specified criteria. This parameter transformation enables automated decision-making without requiring complex manual evaluation.
2Measurement precision
If retrieved batteries are retested to check degree of degradation, then accurate reusability determination can be made, but additional cost and time are required
Solution Approach 1:
The patent performs the battery degradation measurement action in advance during the battery's operational life, storing the results in the RFID tag. When the battery is retrieved, the pre-stored measurement data is directly used for decision-making, eliminating the need for redundant retesting and saving both time and resources.
Solution Approach 2:
The patent creates a copy of the battery's degradation status data and stores it in the RFID tag during normal operation. This data copy serves as a surrogate for actual retesting, allowing the decision-making process to rely on historical data rather than requiring physical retesting of the battery.
3Reliability
If no history record information is stored for a battery pack, then the system cannot determine reusability, but the battery may still be reusable
Solution Approach 1:
The patent treats batteries without history records as disposable/unusable, accepting a conservative approach that may overlook some reusable batteries. This simplifies the decision-making process by providing a clear default rule (no record = unusable), thereby maintaining processing efficiency and avoiding the need for complex fallback evaluation procedures.
Data Source
AI summary
Provided is a method of reusing a battery, a battery management system, a battery management apparatus, and an information communication terminal apparatus, wherein, upon retrieving batteries mounted on vehicles, methods of handling the retrieved batteries can be determined at low cost. Measurement data of each of a plurality of stacks constituting a battery pack are transmitted to a data station. The data station stores the received measurement data in a history information storage unit as history information. When history information of a battery pack mounted on a scrapped vehicle is not stored in the history information storage unit of the data station, that battery pack is subjected to recycle processing. When history information thereof is stored in the history information storage unit of the data station, a method of reusing the battery pack is determined on the basis of the history information.