Vehicle Headrest Wireless Charging for Wearable Power Supply
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Solution Overview
Problem
Vehicle headrests do not provide wireless power transmission to wearable electronic devices, leading to bulky and uncomfortable designs due to the need for heavy batteries to support long-duration operation, and wearable electronics must be charged separately, which is inconvenient.
Innovation Solution
A vehicle headrest assembly with a built-in power cable and transmitter that wirelessly transmits power to wearable devices using radio waves, magnetic fields, or charging beams, and includes a switch to control power transmission based on device proximity and charge level.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If wearable electronic devices use large batteries to support long duration operation, then the duration of action is improved, but the weight and comfort are worsened
Solution Approach 1:
The patent combines the power source function into the vehicle headrest assembly, merging the headrest with wireless power transmission capabilities. This allows wearable devices to draw power from the vehicle's power supply through the headrest, eliminating the need for large onboard batteries in the wearable devices themselves.
Solution Approach 2:
The headrest assembly acts as an intermediary between the vehicle's power supply and the wearable electronic device. It contains a transmitter that wirelessly transmits power to the device, serving as a mediator that enables power transfer without requiring the device to carry its own large battery.
2Duration of action of moving object
If wearable electronic devices use large batteries to support long duration operation, then the duration of action is improved, but the device complexity is worsened
Solution Approach 1:
The patent combines the power source function into the vehicle headrest assembly, merging the headrest with wireless power transmission capabilities. This allows wearable devices to draw power from the vehicle's power supply through the headrest, eliminating the need for large onboard batteries in the wearable devices themselves.
3Use of energy by moving object
If wearable electronic devices require separate charging, then the power transmission efficiency is improved, but the ease of operation is worsened
Solution Approach 1:
The system enables automatic charging through wireless power transmission. When a wearable device is placed on or near the headrest, the transmitter automatically detects the device and begins power transmission without requiring manual connection or user intervention, making the charging process self-service and convenient.
Solution Approach 2:
The headrest assembly acts as an intermediary between the vehicle's power supply and the wearable electronic device. It contains a transmitter that wirelessly transmits power to the device, serving as a mediator that enables power transfer without requiring the device to carry its own large battery.
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 lighter and more comfortable wearable devices by eliminating the need for bulky batteries and allowing convenient, automatic charging without physical connections.
Implementation Method 1
the transmitter emits radio waves at a frequency capable of inducing an electric potential in a device within a field of transmission. In at least some implementations, the transmitter emits a magnetic field capable of inducing electric potential in the device within a field of transmission.
Data Source
AI summary
In at least some implementations, the vehicle headrest assembly comprises a body with an exterior defined by an outer surface and an interior. The body includes a mount by which the body is mountable on a vehicle seat. The vehicle headrest assembly includes a power cable at least partially within the interior that is adapted to communicate with a power supply. A transmitter is carried by the body and electrically communicated with the power cable to provide a wireless power transmission. And a switch is in electrical communication with the transmitter to selectively permit transmission from the transmitter.