Dual-Mode Motor Module for Motion-Based Device Charging

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Solution Overview

Problem

Terminal devices such as smartphones and wearable devices face high energy consumption, leading to reduced endurance time without compromising performance, as existing solutions often require power-saving modes that affect user experience.

Innovation Solution

A motor module integrated into the device generates electrical energy during motion, providing a motion charging function by using a coil and magnetic object within a housing, allowing the device to charge its power supply without increasing space occupation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If the device uses power-saving modes to extend endurance time, then the duration of action is improved, but the performance and user experience deteriorate

Engineering Contradiction:
Improveendurance timeVSAvoiduser experience
Core Design Contradiction:
Duration of action of moving objectVSEase of operation

Solution Approach 1:

The patent combines the motor function and power generation function into a single motor module. The motor module can operate in two states: motor state where the coil drives the magnetic object to move, and power generation state where the magnetic object moves to generate charging current. This merging allows the device to extend endurance time without entering power-saving modes, maintaining full performance and user experience.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The motor module enables the device to generate its own charging current through the movement of the magnetic object within the coil. This self-service mechanism allows the device to recharge itself during operation, extending endurance time without external power sources or performance degradation.

Inventive Principle:
Principle #25Self-service

2Duration of action of moving object

If a separate power generation module is added to extend endurance, then the duration of action is improved, but the device complexity increases

Engineering Contradiction:
Improveendurance timeVSAvoidmodule integration
Core Design Contradiction:
Duration of action of moving objectVSDevice complexity

Solution Approach 1:

The patent integrates the power generation function into the existing motor module structure. The motor module includes a housing, a coil surrounding the housing, and a magnetic object disposed in the housing. The same components used for motor function (coil, magnetic object, housing) are utilized for power generation, eliminating the need for separate power generation modules and reducing device complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The motor module is designed to perform multiple functions: it can operate as a motor to drive the magnetic object, and it can operate as a generator when the magnetic object moves within the coil. This multi-functionality allows a single module to extend endurance time without increasing device complexity through additional components.

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

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

The integration of electricity generation and motor functions enhances device endurance without reducing performance, enabling continuous operation and user experience.

Implementation Method 1

the coil drives, by using a magnetic field generated based on a current input from a power supply module, the magnetic object to move within the housing

Methodology Applied
Scientific EffectMagnetic field generation: Electromagnet

Implementation Method 2

the magnetic object moves within the housing, thereby generating a charging current on the coil

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentEP4611233A1Motor module, electronic device, and control method and apparatus for motor module
Publication Date: 2025.09.03 BEIJING XIAOMI MOBILE SOFTWARE CO LTD
  • EP4611233A1 patent drawingFigure 1~2
  • EP4611233A1 patent drawingFigure 3~4
  • EP4611233A1 patent drawingFigure 5~6

AI summary

The present disclosure relates to a motor module (100), an electronic device, a control method and apparatus for a motor module (100). The motor module (100) includes a housing (101), at least one coil surrounding the housing (101), and a magnetic object (103) disposed in the housing (101). The motor module (100) is provided with a motor state and a non-motor state; in the motor state, the coil drives, by using a magnetic field generated based on a current input from a power supply module (303), the magnetic object (103) to move within the housing (101); and in the non-motor state, the magnetic object (103) moves within the housing (101), thereby generating a charging current on the coil, where the charging current is used for charging the power supply module (303).