Ear-Worn Charger Contact Sequencing for Reliable Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional hearing device charging methods require complex alignment and can be prone to improper connections, leading to inefficiencies and potential damage from foreign objects.
Innovation Solution
A system with a charging module that initially connects cathode contacts before anode contacts, ensuring a consistent inrush current waveform and reducing spurious electrical spikes, while also featuring a retention arrangement to maintain engagement during charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional charging methods are used, then charging can be performed, but complex alignment is required and improper connections may occur
Solution Approach 1:
The charging interface is designed so that the cathode contact protrudes beyond the anode contact, establishing a predetermined spatial sequence. This preliminary geometric arrangement ensures that during insertion, the cathode makes contact first, eliminating the need for complex alignment procedures and preventing improper connections before the charging sequence is even initiated.
Solution Approach 2:
The displaceable cathode contact acts as an intermediary element that facilitates the charging connection sequence. By being displaceable and positioned to extend beyond the anode contact, it mediates the interaction between the charging device and power source, ensuring proper contact establishment order without requiring precise alignment of all components simultaneously.
2Productivity
If cathode and anode contacts are connected simultaneously, then charging can begin, but inrush current spikes and electrical noise may occur
Solution Approach 1:
The geometric design where the cathode contact protrudes beyond the anode contact creates a preliminary contact sequence. During insertion, the cathode establishes electrical connection first, followed by the anode. This preliminary action separates the simultaneous connection event into a sequential process, allowing controlled inrush current management and reducing electrical spikes while maintaining charging productivity.
Solution Approach 2:
By establishing cathode contact before anode contact through the protruding geometry, the system beforehand cushions against the harmful effects of simultaneous connection. This sequential establishment acts as a protective measure, preventing inrush current spikes and electrical noise that would occur with simultaneous connection, while still enabling rapid charging initiation.
3Ease of manufacture
If charging interface components are fixed, then manufacturing is simpler, but foreign objects may cause improper connections
Solution Approach 1:
The cathode contact is designed to be displaceable rather than fixed, introducing dynamic capability to the charging interface. This displacement ability allows the cathode to adjust its position during insertion, ensuring proper contact sequence establishment even in the presence of foreign objects. The dynamic nature maintains manufacturing simplicity while providing protection against improper connections caused by foreign object interference.
Data Source
AI summary
A system includes a hearing device comprising a rechargeable power source, power management circuitry, and a first charging interface comprising a first cathode contact and a first anode contact spaced apart from the first cathode contact. A charging module comprises a second charging interface configured to detachably couple with the first charging interface of the hearing device. The second charging interface comprises a second anode contact having a contact surface and a displaceable second cathode contact. An arrangement is configured to displace at least a portion of the second cathode contact above the contact surface to facilitate electrical contact between the first and second cathode contacts prior to electrical contact between the first and second anode contacts. Charging circuitry of the charging module is coupled to the second charging interface and configured to charge the rechargeable power source of the hearing device.