Watch Battery Recharging Guidance via Mechanical Control Actuation

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Solution Overview

Problem

Existing watches that convert mechanical energy to electrical energy for recharging face the inconvenience of frequent battery recharging needs, with existing solutions failing to provide optimal management and user guidance for energy consumption.

Innovation Solution

A method and watch implementation that includes a processing unit to identify battery charge levels and function energy consumption, providing visual and audio guidance for optimal recharging through a mechanical energy generation mechanism, using a control element like a bezel or crown, and a hybrid display dial.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of stationary object

If the watch uses a rechargeable battery with a mechanical energy generation mechanism, then the battery lifespan is extended and replacement frequency is reduced, but the wearer must frequently recharge the battery when it runs out of power

Engineering Contradiction:
Improvebattery lifespanVSAvoidrecharging convenience
Core Design Contradiction:
Duration of action of stationary objectVSEase of operation

Solution Approach 1:

The system continuously monitors the battery charge level and provides real-time feedback to the wearer through visual displays and audio alerts. This feedback mechanism informs the wearer when recharging is needed and guides the recharging process, transforming the passive recharging experience into an actively managed process that reduces inconvenience.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system performs preliminary assessment of battery charge levels and predicts when recharging will be needed before the battery is completely depleted. By proactively notifying the wearer in advance and providing guidance on optimal recharging timing and duration, the system prevents the stress of sudden power depletion and allows planned recharging actions.

Inventive Principle:
Principle #10Preliminary action

2Productivity

If the watch provides detailed battery management information and guidance, then the wearer can optimize mechanical force usage for recharging, but the device complexity increases

Engineering Contradiction:
Improverecharging efficiencyVSAvoidmanagement system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The watch system autonomously monitors its own battery charge level, calculates consumption patterns, determines optimal recharging timing, and provides self-guided instructions to the wearer. This self-service capability eliminates the need for external monitoring devices or complex user interventions, allowing the system to manage its own energy resources while providing simplified guidance to the wearer.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system replaces manual estimation of battery status and recharging needs with electronic sensors, digital processing, and algorithmic calculations. Instead of relying on mechanical indicators or user guesswork, electronic monitoring continuously tracks charge levels and consumption, providing precise data-driven guidance that simplifies the user interface while enhancing recharging efficiency.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables the wearer to efficiently manage and optimize mechanical force for recharging, ensuring timely battery replenishment based on consumption needs, with visual and audio prompts for user action.

Implementation Method 1

a power generation mechanism (4) comprising an electric generator in kinematic linkage with at least one control element (5) of the watch

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentEP3647885B1Method for managing power consumption of a watch
Publication Date: 2026.01.07 TISSOT SA
  • EP3647885B1 patent drawingFigure 1~2

AI summary

The invention relates to a method for managing the electrical consumption of a watch (1) comprising a step of identifying (10) a need to recharge a battery (3) of the watch (1) and a step of recharging (17) said battery (3) by the guided actuation of a control element (5) of an electrical energy generation mechanism (4) of the watch (1) if a need to recharge is identified.