Reserve Battery Activation Mechanism Using Spring-Driven Piston
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Solution Overview
Problem
Reserve battery cells often require an external force of sufficient magnitude to activate the power generation, which may not be readily available in all environments, limiting their usability.
Innovation Solution
An activation mechanism featuring a compressed spring and trigger system that releases the spring to pressurize the electrolytic solution, allowing for activation with a smaller external force, enabling the electrolytic solution to be discharged and initiate a power-generating chemical reaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If a partition or barrier is used to separate the electrolytic solution from the electrodes, then the shelf life is extended by preventing chemical reactions in the inactive state, but a large external force is required to rupture the partition for activation
Solution Approach 1:
A piston is introduced as an intermediary mechanical element between the trigger mechanism and the electrolytic solution. The piston converts the force from a small spring (activated by minimal external force) into sufficient pressure to rupture the partition. This mediator amplifies the activating force while keeping the activation force requirement low.
Solution Approach 2:
A spring is pre-compressed and stored within the housing during manufacturing, ready to provide the necessary activating force. The spring is held in a compressed state by a trigger mechanism, and when activated, it rapidly expands to drive the piston and rupture the partition. This preliminary preparation allows the system to respond quickly with sufficient force using minimal external input.
2Reliability
If an external force of sufficient magnitude is required to activate the battery cell, then the partition can be reliably ruptured to initiate power generation, but the usability is limited in environments where such force is not readily available
Solution Approach 1:
The direct mechanical approach of applying large external force to rupture the partition is replaced with a spring-driven piston system. Instead of requiring the user to directly apply large force, a pre-compressed spring provides the mechanical energy needed to drive the piston and rupture the partition reliably, while only requiring minimal external force to release the trigger.
Solution Approach 2:
The system uses a trigger mechanism that can be activated by minimal periodic or impulsive force (such as pressing a button or pulling a tab). This small periodic action releases the pre-compressed spring, which then delivers the large force needed for partition rupture. This allows reliable activation in diverse environments where only small forces are readily available.
3Force
If a spring mechanism is used to amplify the external force, then the activation force requirement is reduced, but the device complexity increases
Solution Approach 1:
The activation mechanism is divided into distinct functional segments: a housing containing the spring, a piston, and a trigger mechanism. This segmentation allows each component to be optimized for its specific function and facilitates manufacturing and assembly. The modular structure manages complexity by organizing components into discrete, manageable units.
Solution Approach 2:
The spring mechanism serves multiple functions: it stores energy during storage, provides the activating force when needed, and can be integrated with various trigger types (button, tab, lever). This multi-functionality reduces the need for additional components and simplifies the overall design while maintaining the force amplification capability.
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
This mechanism allows for the activation of reserve battery cells with a reduced external force requirement, expanding their applicability to various environments and applications where only lesser magnitudes of force are available, such as in response to an external force of 5-10 pounds.
Implementation Method 1
The delivery device comprises a compressed spring configured to be released in response to an external force to initiate the discharge of the electrolytic solution from the housing
Data Source
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AI summary
An activation mechanism for a reserve battery cell generally includes a housing with a chamber containing an electrolytic solution and a delivery device configured to discharge the electrolytic solution from the housing. The delivery device includes a compressed spring configured to be released in response to an external force to initiate the discharge of the electrolytic solution from the housing.