Rechargeable Battery Threshold Control to Prevent False Warnings

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Solution Overview

Problem

Rechargeable batteries with monitoring systems often emit false or delayed warning signals, leading to premature disposal of functional batteries or failure to detect malfunctions in a timely manner.

Innovation Solution

A method involving sensors, a data processing apparatus, a control device, and a transmitting and receiving device that captures values, compares them to threshold values, and adjusts the battery's operating state to prevent further damage, emit alerts, or block energy intake/output, allowing for more accurate monitoring and management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If threshold values are used to detect battery malfunctions, then reliability of battery monitoring is improved, but false warning signals are generated leading to premature disposal of functional batteries

Engineering Contradiction:
Improvebattery monitoring reliabilityVSAvoidfalse warning signals
Core Design Contradiction:
ReliabilityVSLoss of information

Solution Approach 1:

The system performs preliminary actions by storing historical threshold exceedance events in a memory device before making a final malfunction determination. Instead of immediately warning when a single threshold is exceeded, the system first records the event and evaluates it in context of past events, reducing false warnings while maintaining reliable detection

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system uses feedback by evaluating both current sensor values and historical stored events to determine whether a malfunction exists. The control device receives feedback from the memory device about past threshold exceedances and adjusts its warning behavior accordingly, preventing false alarms while maintaining accurate malfunction detection

Inventive Principle:
Principle #23Feedback

2Speed

If warning signals are emitted immediately when threshold values are reached, then responsiveness to battery malfunctions is improved, but functional batteries are disposed of prematurely

Engineering Contradiction:
Improvewarning signal responsivenessVSAvoidbattery functionality assessment
Core Design Contradiction:
SpeedVSReliability

Solution Approach 1:

The system performs preliminary recording of threshold exceedance events in memory before emitting a warning signal. This preliminary action allows the system to maintain responsiveness by immediately detecting threshold violations while delaying the warning emission until the event is properly evaluated in context of historical data, preventing premature disposal of functional batteries

Inventive Principle:
Principle #10Preliminary action

3Measurement precision

If multiple sensors are used to monitor battery parameters, then measurement precision is improved, but device complexity increases

Engineering Contradiction:
Improvebattery parameter detection accuracyVSAvoidmonitoring system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The memory device and control device serve multiple functions: they store historical sensor data, evaluate current sensor readings against threshold values, determine malfunction conditions, and control warning signal emission. This multi-functionality allows the system to use multiple sensors for improved measurement precision while managing device complexity through shared components

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS20230333618A1Method for protecting a rechargeable battery
Publication Date: 2023.10.19 HILTI AG
  • US20230333618A1 patent drawing
  • US20230333618A1 patent drawing
  • US20230333618A1 patent drawing

AI summary

Method for operating a system containing at least one rechargeable battery, a data processing apparatus with a memory device, a control device, at least one sensor and a transmitting and receiving device, having the method steps of capturing values via a sensor; transmitting the captured values to the data processing apparatus using the transmitting and receiving device; comparing the captured values with threshold values stored in the memory device; storing the event that a captured value reaches a threshold value in the memory device; and adjusting the at least one rechargeable battery from a first operating state to a second operating state if a first threshold value is reached once and/or if a second threshold value is reached for a predetermined number. A system for carrying out the method is also provided.