Hearing Aid Battery Module With FPC Spring Contacts
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Rechargeable hearing aids require battery replacement every 2-3 years, necessitating desoldering and resoldering processes that cannot be performed at fitting centers, leading to inconvenience and long wait times for users.
Innovation Solution
A hearing aid design featuring a mounting frame with a groove, a battery body with electrode contact areas, and an FPC-connecting member with spring plates, allowing detachable battery connection without welding, enabling easy replacement at fitting centers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bonding wires are used to connect rechargeable batteries to circuit boards, then battery reliability is improved, but battery replacement complexity and time increase
Solution Approach 1:
The battery connection system is segmented into separate components: the battery body, the FPC-connecting member with spring plates, and the mounting frame. This segmentation allows the battery to be detached as a complete unit without affecting the circuit board, enabling simple replacement while maintaining reliable electrical connections through the spring plate contacts.
Solution Approach 2:
The battery and its connection components are extracted as a separate replaceable module from the permanent circuit board. The FPC-connecting member with spring plates is designed to interface with the battery terminals while remaining part of the hearing aid housing, allowing the battery to be removed and replaced without working on the circuit board itself.
2Reliability
If desoldering and resoldering processes are used for battery replacement, then battery connection reliability is maintained, but service time and user convenience deteriorate
Solution Approach 1:
The mechanical spring plate contact system replaces the thermal/soldering process entirely. Electrical connections are established through mechanical contact between spring plates and battery terminals, eliminating the need for desoldering and resoldering operations. This mechanical connection system allows for instant battery replacement without time-consuming thermal processes.
Solution Approach 2:
The battery is designed as a disposable or replaceable component with a simple mechanical attachment system. The FPC-connecting member with spring plates provides a permanent connection interface in the hearing aid, while the battery itself can be easily replaced without requiring complex repair processes, effectively treating the battery as a consumable item.
3Manufacturing precision
If batteries are sent back to the original factory for replacement, then manufacturing quality control is improved, but user convenience and service accessibility deteriorate
Solution Approach 1:
The FPC-connecting member with spring plates is designed with specific local features that match the battery terminals, creating a precise but simple connection interface. This localized precision in the connection mechanism allows for reliable electrical contact while maintaining ease of replacement, as only the battery unit needs to be precisely aligned during insertion, not the entire hearing aid assembly.
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
Facilitates convenient battery replacement without desoldering and resoldering, ensuring reliability and reducing the need for factory returns, thus enhancing user convenience.
Implementation Method 1
the FPC-connecting member comprises an FPC-connecting board, a side of the FPC-connecting board facing the battery body is provided with a first electrode spring plate and a second electrode spring plate, and the first electrode spring plate is connected with the first electrode contact area of the battery body
Implementation Method 2
a metal sheet comprising a first end connected with the second electrode contact area of the battery body and a second end connected with the second electrode spring plate
Data Source
AI summary
A hearing aid that facilitates easy battery replacement comprises a mounting frame, a battery body, an FPC-connecting member, and a metal sheet. The mounting frame is provided with a mounting groove; The battery body is detachably mounted in the mounting groove and comprises first and second electrode contact areas; The FPC-connecting member is combined with the mounting frame to accommodate the battery body and comprises an FPC-connecting board. A side of the FPC-connecting board facing the battery body is provided with first and second electrode spring plates, and the first electrode spring plate is connected with the first electrode contact area of the battery body; The metal sheet has a first end connected with the second electrode contact area of the battery body and a second end connected with the second electrode spring plate. The disclosure can achieve easy and convenient battery replacement.