Acoustic Wave Agitation for Battery Dendrite Prevention
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Solution Overview
Problem
Dendrite formation during the charging of rechargeable batteries leads to reduced discharge capacity and potential internal shorts, posing safety and performance issues.
Innovation Solution
Incorporating an acoustic wave device within the battery that generates acoustic waves during charging to agitate the electrolyte, homogenize the distribution of cations, and prevent dendrite formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If acoustic wave device is incorporated to generate acoustic waves during charging, then dendrite formation is prevented and battery safety is improved, but device complexity increases
Solution Approach 1:
An acoustic wave device is introduced as an intermediary component between the charging system and the electrolyte. The device generates acoustic waves that propagate through the electrolyte to prevent dendrite formation, acting as a mediator that transforms electrical charging energy into mechanical acoustic energy to achieve dendrite prevention without directly modifying the electrode structures
Solution Approach 2:
The patent replaces traditional mechanical stirring or physical intervention methods with acoustic wave generation. Instead of using mechanical components to agitate the electrolyte, the system uses acoustic waves (sound waves) to create acoustic streaming and cavitation effects that achieve the same dendrite prevention goal with fewer moving parts and reduced mechanical complexity
2Reliability
If acoustic waves are generated to agitate electrolyte and homogenize cation distribution, then dendrite formation is prevented, but energy consumption increases
Solution Approach 1:
The acoustic wave device operates periodically during the charging process rather than continuously. Acoustic waves are generated at specific intervals or during critical charging phases when dendrite formation risk is highest, allowing the system to achieve effective dendrite prevention while minimizing overall energy consumption compared to continuous operation
Solution Approach 2:
The system adjusts acoustic wave parameters (frequency, amplitude, duration) to optimize energy efficiency. By tuning these parameters, the acoustic waves achieve sufficient agitation and cation homogenization at lower energy levels than would be required with traditional mechanical stirring methods, reducing the overall energy burden on the battery system
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
The acoustic wave device effectively prevents dendrite formation by ensuring a uniform deposit of cations, thereby maintaining battery performance and safety over multiple charge cycles.
Implementation Method 1
The acoustic wave device may be configured to generate a plurality of acoustic waves during a charging of the battery
Implementation Method 2
The plurality of acoustic waves may induce acoustic streaming within the electrolyte. The acoustic streaming may further agitate the electrolyte to homogenize the distribution of the cations in the electrolyte
Data Source
AI summary
A dendrite resistant battery may include a first electrode, a second electrode, and an electrolyte interposed between the first electrode and the second electrode. The dendrite resistant battery may further include at least one acoustic wave device configured to generate a plurality of acoustic waves during a charging of the battery. The charging of the battery may trigger cations from the first electrode to travel through the electrolyte and deposit on the second electrode. The plurality of acoustic waves may agitate the electrolyte to at least homogenize a distribution of cations in the electrolyte. The homogenization of the distribution of cations may prevent a formation of dendrites on the second electrode by at least increasing a uniformity of the deposit of cations on the second electrode. Related methods and systems for battery management are also provided.