Drone revolutionized farming and delivery and photography and spying. But there is just one big great issue: burning and exploding drone batteries. You maybe wondered sometimes or time to time, “Can li-ion battery explode?” or “Why would a battery explode?” Well, as a fun fact, it is a use and battery technology issue.
The Increase in Demand for Safe Drone Batteries
Buying drones will no longer be the catchphrase of the previous decade ago. The higher the adoption by the users and institutions, the higher the demand to power them with safer and efficient drone batteries. Lithium-ion battery fire hazard of burn, fire, or explosion hazard of demonstrating such magnitude of financial loss, reputation loss, or even loss of life.
Thermal Runaway: Chain Disaster Reaction
Heat runaways are the worst form of failure for a lithium-ion battery. Chain reaction that just keeps going and going and producing and producing heat, and releasing energy, that will eventually lead to complete destruction.
Causes of Overheating：
Overcharge: Lithium-ion battery over-charging beyond its charge capacity will lead to over-heating, which will again lead to a heat runaway.
High Temperature:
External or internal high temperature would destabilize the internal chemical battery structure.
Short Circuits:
Terminal contact would cause self-heating and self-discharge.
Physical Damage:
Physical abuse, crush, or puncture of the lithium-ion battery would destabilize the internal structure.
Manufacturing Defects:
Manufacturing defects will by their very nature cause unstable states.
Incorrect Charging:
In-compatible charging would cause the generation of heat and overcharging.
Wear and Aging:
The battery parts wear and deteriorate over time.
batteries Leakage:
Thermal runaway and fire or thermal explosion are induced due to flammable batteries leakage by mechanical or design failure.
Poor Ventilation:
It leads to heat buildup and thermal runaway due to inadequate ventilation.
External Forces:
If you, by mistake, drop the battery on the ground or expose the battery to external mechanical loading, the battery is subjected to mechanical or physical internal loading.
Semi-Solid-State Batteries: A Breakthrough Technology
Semi-solid-state batteries are emerging energy storage technology. Semi-solid state battery is indeed emerging energy storage technology which is a blend of lithium-ion battery and solid-state battery. Semi-solid state batteries have semi-solid batteries in gel or slurry form instead of liquid batteries.
Comparison of Semi-Solid batteriess in Battery Safety
There is nearly no chance of leakage and fire when semi-solid batteries is used compared to conventional liquid-based batteries.
Less Leakage and Fire
Less leachable and less flammable than liquid lithium-ion battery flammable batteries, semi-solid batteries reduces the risk of explosion and fire to an extremely high level, and semi-solid batteries are easier to handle in drones.
Better Thermal Stability
Semi-solid batteries is more thermally stable at elevated temperature with lower risk of thermal runaway.
Higher Energy Density and Cycle Life
Semi-solid-state batteries are more energy per unit of volume and thus most suitable for applications where maximum energy density is the highest constraint, i.e., space, drones, electric vehicles. Semi-solid state batteries have more energy-dense . Semi-solid batteries also longer-lived as it will not become obsolete in a few years.
Comparison of Semi-Solid Lithium-Ion Batteries and liquid-based Batteries
To appreciate semi-solid batteries’ benefits over their potential better, let us compare them with liquid-based batteries on some vital parameters:
batteries Components
Semi-Solid State Battery: Employ a gel or slurry batteries with optimal properties of solid and liquid batteries and thus safer with higher energy density.
liquid-based Battery: Employ a liquid batteries to provide ionic mobility between electrodes, works decently but burns and leaks on puncture.
Safety and Stability
Semi-Solid State Battery: Semi-solid batteries reduces burning, leakage, and thermal runaway risks and hence safer than liquid-based technology.
liquid-based Battery: Safety is not a concern under regular operation, but punctured, overcharged, or exposed to high temperatures, liquid-based batteries are hazardous. Improper usage of liquid batteries will result in battery burn or explosion.
Energy Density
Semi-Solid State Battery: Offers higher energy density than is contained in liquid-based batteries when mass-produced. Semi-solid-state batteries contain higher energy in the same volume, and this is especially well suited for drone and electric vehicle battery use.
liquid-based Battery: Offers reasonably good energy density but less capacity than offered by semi-solid-state batteries when most capacity storage in the least amount of space is required.
Lifespan and Durability
Semi-Solid State Battery: They’re solidifying, ignoring wear and tear. Perhaps long lifespan, if used heavily.
liquid-based Battery: liquid-based batteries despite being strong only have the tendency of draining quickly after repeated charging and discharging. The capacity of a liquid-based battery to retain the charge between periods is lost.
Prevention from Overheating and Explosion Risks brought about by the use of Semi-Solid Batteries
Improved Thermal Management
Semi-solid batteries possesses greater heat conductivity due to which the heat is removed better. It regulates the battery temperature and does not allow thermal runaway.
Less Risk of batteries Leaks
As the batteries is semi-solid, the chances of leakage are less. This avoids one of the principal hazards of liquid-based Battery fires where leakage of the batteries would even cause fire.
Physical Damage Resistance is improved
Semi-solid batteries is physically more stable in shape and hence less prone to failure by physical contact. It also limits it to lower levels of internal short-circuiting, among other reasons for high-temperature and explosion failure.
Increased Lifespan
More energy density translates to longer flight duration between recharge.
venues with even higher distance covered and mode of operation.
Safe Operation in Hostile Environments
Better thermal stability allows drones to operate under ambient altitude and temperature conditions. Lower Maintenance and Replacement Cost
Increased life and life cycle minimize maintenance and replacement cost throughout the life cycle of the drone. Future of Drone Battery Technology
The future looks bright for drone batteries with semi-solid-state technology in the wings to take over the market. More are on the horizon as there is even more R&D, and we can ensure us that there is going to be even more energy density, charging, and safety. The semi-solid battery mass production will change the face of the drone industry and have flight become safe, efficient, and reliable. It also nullifies issues like “can storing a lithium battery in an elevator fire up?” as it’s safer.
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