Microwave Dendrite Dissolution for Battery Life Extension
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Solution Overview
Problem
Lithium-ion batteries suffer from premature failure due to dendrite formation, which causes short circuits and reduced power output, as a result of cracks and impurities in the anode leading to the accumulation of metallic lithium, necessitating a method to extend battery life.
Innovation Solution
A system comprising microwave antennas positioned near each battery cell, monitored by a computing device that identifies dendrite formation and applies targeted microwave radiation to dissolve or melt the dendrites, maintaining a safe distance between the cathode and anode to prevent short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If microwave radiation is applied to dissolve dendrites, then battery life is prolonged, but energy consumption increases
Solution Approach 1:
The system performs preliminary detection of dendrite formation using EIS and optical sensors before applying microwave radiation. This allows targeted treatment only when dendrites are detected, avoiding continuous energy consumption while maintaining battery life extension benefits
Solution Approach 2:
The microwave radiation is applied locally to specific battery cells where dendrites are detected, rather than treating the entire battery system uniformly. This localized approach reduces overall energy consumption while effectively addressing dendrite problems in affected cells
2Reliability
If microwave radiation is applied to remove dendrites, then short circuit risk is reduced, but electrode damage risk increases
Solution Approach 1:
The system continuously monitors battery cell health through EIS and optical sensors during and after microwave treatment. This feedback mechanism allows real-time adjustment of microwave parameters and immediate detection of any electrode damage, enabling the system to prevent harmful effects while maintaining short circuit prevention benefits
Solution Approach 2:
The microwave radiation is applied in periodic pulses rather than continuous exposure, with intervals for monitoring and cooling. This periodic approach allows the system to dissolve dendrites effectively while preventing excessive heat accumulation that could damage electrodes
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 system effectively prolongs battery life by selectively targeting and removing dendrites, minimizing energy consumption and risk of electrode damage, thereby extending the battery's operational lifespan.
Implementation Method 1
initiate microwave radiation for the identified cell utilizing the corresponding microwave antenna for the identified cell
Implementation Method 2
activate the identified microwave antenna to increase a temperature of the identified battery cell
Data Source
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AI summary
Devices, methods, systems, and computer-readable media for battery life prolongation are described herein. One or more embodiments include a system comprising: a battery that includes a number of cells, a number of microwave antennas each positioned proximate to a corresponding cell of the number of cells, a computing device to: monitor a health state of the number of cells, identify a cell from the number of cells based on the health state, and initiate microwave radiation for the identified cell utilizing the corresponding microwave antenna for the identified cell.