Vehicle Access Arrangement With Wireless Emergency Power
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Solution Overview
Problem
Passive vehicle access systems fail when the vehicle's electrical system fails, as they rely on energy from the vehicle's battery, leading to a need for a mechanical emergency key that increases the size of the identification transmitter, making it inconvenient for carrying.
Innovation Solution
An access arrangement with a vehicle-side rechargeable electrical energy storage device and energy supply system that can be wirelessly charged, independent of the vehicle's power supply, allowing for unlocking even when the power is out, using a mobile identification transmitter like a smartphone to transmit energy and authenticate access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanical emergency key is provided in the mobile identification transmitter, then emergency access to the vehicle is enabled, but the dimensions of the identification transmitter are enlarged
Solution Approach 1:
The patent replaces the mechanical emergency key system with a wireless energy transmission system. Instead of using a mechanical key head to manually operate the locking mechanism, the system uses electromagnetic energy transmitted from the mobile identification transmitter to power the unlocking mechanism electronically, thereby eliminating the need for a bulky mechanical key head.
Solution Approach 2:
The patent introduces an intermediate energy storage component (capacitor) and wireless energy transmission mechanism as a mediator between the mobile identification transmitter and the locking mechanism. This intermediary system allows energy to be transmitted wirelessly and stored temporarily, enabling the unlocking function without requiring a mechanical key in the mobile device.
2Ease of operation
If passive access arrangement is used, then convenient access is achieved, but the system fails when vehicle electrical system fails
Solution Approach 1:
The patent implements preliminary action by equipping the mobile identification transmitter with an energy storage device (capacitor) that is charged in advance through wireless energy transmission from the vehicle's communication device. This pre-stored energy enables the transmitter to actively power the unlocking mechanism during emergency situations when the vehicle's electrical system fails, thus maintaining reliability while preserving the convenience of passive access under normal conditions.
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 secure and convenient emergency unlocking of vehicles without a mechanical key, minimizing the device's size and complexity, allowing users to unlock their vehicles using everyday items like smartphones, even when the vehicle's power is failed.
Implementation Method 1
a first section for receiving wirelessly transmitted energy and for converting the transmitted energy into electrical energy
Data Source
AI summary
An access arrangement for a vehicle comprises a vehicle-side unlocking device for unlocking a locking mechanism. Furthermore, it comprises a vehicle-side rechargeable electrical energy storage device which is set up to supply the unlocking device with energy independently of the on-board power supply of the vehicle. Moreover, the access arrangement has a vehicle-side energy supply device comprising a first section for receiving wirelessly transmitted energy and for converting the transmitted energy into electrical energy, and a second section for charging the vehicle-side rechargeable electrical energy storage device. In particular, the access arrangement also comprises a vehicle-side authentication device for checking access authorization, which is supplied with energy independently of the on-board power supply by means of the vehicle-side rechargeable electrical energy storage device. It is therefore no longer necessary to equip a mobile identification transmitter carried by a user with the access arrangement with a mechanical key.