Battery Pack Identity Broadcast for Automatic IoT Reconnection

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Solution Overview

Problem

The frequent replacement of battery packs in IoT devices necessitates repeated manual re-establishment of network connections, making operations cumbersome and inefficient.

Innovation Solution

A battery pack with a wireless communication module automatically broadcasts its connected terminal device's identity information, allowing an electronic device to automatically reconnect without user intervention upon replacement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a wireless communication module is arranged on the battery pack to enable wireless connections, then the need for wired connections is reduced and space restrictions are eliminated, but the cost increases due to each tool needing its own module

Engineering Contradiction:
Improvewireless connection capabilityVSAvoidcost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent applies universality by making the battery pack the universal platform that carries the wireless communication module. Instead of each tool having its own module, the battery pack serves multiple tools through a common interface, allowing one module to serve multiple functions across different devices.

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

Solution Approach 2:

The battery pack acts as an intermediary between the electronic device and the tool. It provides the wireless communication capability that bridges the gap, allowing the electronic device to communicate with tools that don't have built-in wireless modules by using the battery pack as a mediator.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Duration of action of moving object

If the battery pack is frequently replaced during long-term operation, then the tool can continue operating, but the network connection must be re-established each time making operation cumbersome

Engineering Contradiction:
Improveoperation durationVSAvoidconnection operation
Core Design Contradiction:
Duration of action of moving objectVSEase of operation

Solution Approach 1:

The system performs preliminary action by pre-storing the terminal device's identification information in the battery pack's memory before replacement. This pre-stored information enables the electronic device to automatically recognize and reconnect to the battery pack without requiring manual reconfiguration after replacement.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system implements self-service through automatic reconnection. The electronic device autonomously detects the battery pack replacement, retrieves the stored identification information, and automatically re-establishes the wireless connection without user intervention, making the system serve itself rather than requiring manual operation.

Inventive Principle:
Principle #25Self-service

3Reliability

If manual re-establishment of network connection is required after battery pack replacement, then the connection can be re-established, but the operation becomes more cumbersome and time-consuming

Engineering Contradiction:
Improveconnection stabilityVSAvoidconnection time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The battery pack performs preliminary action by storing the terminal device's identification information in advance. This pre-stored data enables rapid automatic recognition and reconnection, eliminating the need for time-consuming manual re-establishment operations while maintaining connection reliability.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system uses feedback mechanisms where the battery pack broadcasts its presence and the electronic device detects this information. The stored identification information serves as feedback that confirms the correct battery pack is detected, enabling automatic verification and reconnection without time loss.

Inventive Principle:
Principle #23Feedback

Data Source

PatentEP4443918B1IoT system and control method therefor
Publication Date: 2026.01.14 TECHTRONIC CORDLESS GP
  • EP4443918B1 patent drawingFigure 1
  • EP4443918B1 patent drawingFigure 2
  • EP4443918B1 patent drawingFigure 3

AI summary

The present invention provides an IoT system and a control method therefor. The IoT system comprises a battery pack provided with a connecting terminal and wireless communication module, a terminal device and an electronic device. The battery pack is configured to be capable of establishing an electrical connection and communication connection with the terminal device, and by means of the wireless communication module, can issue broadcast information comprising identity information of the terminal device. The electronic device is configured to be capable of receiving broadcast information, and can operably establish a wireless connection with the battery pack. The electronic device is further configured to be capable, in a state of having established a wireless connection, of storing identity information of the terminal device, and in a state of the wireless connection being broken, on the basis of the identity information in the received broadcast information matching the stored identity information, automatically establishes a wireless connection with the battery pack which issues broadcast information. According to the present invention, in a scenario in which a battery pack is replaced frequently, the electronic device is capable of automatically, by means of the replaced battery pack, wirelessly connecting to the terminal device connected to the battery pack.