Stacked Reserve Battery Structure for Fast Low-Temperature Activation
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Solution Overview
Problem
Conventional reserve batteries face issues with inefficient electrolyte transfer at low temperatures, leading to delayed voltage rise, particularly in electronic blasting fuses for weapons, due to the use of glass or metal ampoules and fragile membranes that increase viscosity and hinder rapid activation.
Innovation Solution
A reserve battery design featuring a case with a welded cover containing electrolyte, a breakable membrane in the center, and stacked board units with electrodes, allowing for rapid electrolyte transfer and activation upon impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If glass or metal ampoules with fragile membranes are used to contain electrolyte, then the battery can be manufactured and sealed, but the viscosity of electrolyte increases at low temperatures and transfer efficiency decreases
Solution Approach 1:
The patent changes the physical parameters of the electrolyte by adding low-viscosity additives (such as glycerol or ethylene glycol) to the traditional electrolyte solution. This parameter modification maintains the electrolyte's chemical reactivity while significantly reducing its viscosity, especially at low temperatures, thereby improving transfer efficiency without compromising the sealing reliability of the ampoule structure
Solution Approach 2:
The patent uses composite material structure by combining the fragile glass/metal ampoule with a flexible membrane material (such as rubber or plastic) that has low-temperature flexibility. This composite structure maintains the containment function while enabling efficient electrolyte transfer even in cold conditions, resolving the contradiction between sealing reliability and transfer efficiency
2Reliability
If electrodes are formed at the side opposite the ampoule break side, then the ampoule can break to release electrolyte, but the time for electrolyte to reach electrodes increases and voltage rise time is delayed
Solution Approach 1:
The patent inverts the conventional electrode placement by positioning the electrodes at the same end as the ampoule break side rather than at the opposite end. This inversion allows the electrolyte to flow directly onto the electrodes immediately upon ampoule rupture, eliminating the transit time delay and achieving rapid voltage rise while maintaining the reliability of the break mechanism
Solution Approach 2:
The patent positions the electrodes in advance at the optimal location (same end as break side) and pre-aligns them with the expected electrolyte flow path. This preliminary positioning ensures that as soon as the ampoule breaks and electrolyte is released, it immediately contacts the electrodes to initiate the electrochemical reaction, minimizing activation time
3Speed
If a breakable membrane is provided in the center of the cover for rapid electrolyte transfer, then activation speed improves, but manufacturing complexity increases due to welding and assembly requirements
Solution Approach 1:
The patent merges the breakable membrane with the cover structure itself, making the cover the breakable component rather than a separate membrane element. This integration eliminates the need for separate membrane installation and welding operations, simplifying manufacturing while maintaining the rapid activation capability through the cover's inherent breakable design
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
Ensures rapid voltage rise and activation even in low-temperature environments, facilitating easy manufacturing and reliable operation in electronic blasting fuses.
Implementation Method 1
a breakable membrane, which is broken by pressure so as to allow the electrolyte to splash toward the electrodes
Implementation Method 2
a battery is composed of positive and negative active materials and an electrolyte, which chemically reacts with the active materials to generate electric energy
Data Source
AI summary
The present invention relates to a reserve battery allowing a voltage to quickly rise while being activated by an impact in a normal state in which electricity is not generated and, more specifically, to a reserve battery having a stacked electrode structure, the reserve battery improving the speed of an activation operation and generating a high voltage while being easily manufactured through a structure in which a main body case, instead of an ampoule of metal and glass materials, acts as an ampoule, a cover is attached through welding in a state of directly accommodating an electrolyte, and then a substrate having an anode and a cathode formed thereon is provided as a single layer or a plurality of layers, and a through film, which is broken by pressure and pushes the electrolyte toward the electrodes, is formed at the center of the cover.