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Lithium batteries play a crucial role in our daily lives, powering smartphones, laptops, electric vehicles in urban areas, and more. Understanding their working principle and production process is essential for maintaining their efficiency and longevity.
The fundamental mechanism of lithium batteries involves the movement of lithium ions between the cathode and anode, enabling the battery to charge and discharge. The entire production process can be broken down into several stages, each requiring precision and care.
The agricultural drone battery has undergone three generations of evolution. The first-generation battery was derived from standard models, featuring a relatively simple design and numerous potential issues during use. The second generation introduced real-time communication capabilities with the flight controller but was prone to compatibility issues when mixed with older batteries. The third generation significantly enhanced durability against pesticide corrosion and dropping incidents.
Our research shows that the majority (around 90%) of agricultural drone battery damages result from physical drops. Other common issues include plug burns, corrosion or water ingress, and the mixing of old and new batteries. High-current fast charging should be avoided as much as possible to prevent premature wear and tear.
Battery swelling is a clear sign of damage and indicates that the battery can no longer be used safely. This typically arises due to poor welding joints, high internal resistance, faulty protection boards, excessive voltage differences among cells, or zero electricity states.
Battery fires pose the greatest risk and often occur during charging. Overcharging, punctures, impacts, and internal/external short circuits can lead to combustion. Let’s examine two real-world fire incidents:
A critical yet often overlooked step is inspecting the battery upon receipt via courier. Ensure the packaging is intact and the battery shows no signs of damage or deformation. This step is vital for warranty claims and dispute resolution.
Before initial use, verify the battery's voltage to ensure it falls within the acceptable range. The ideal voltage range is as follows:
When charging a drone battery, specific conditions apply regarding external temperature, current, and battery condition. For more details, refer to the diagram below:
Drone batteries require regular maintenance to prevent damage from collisions. Always implement protective measures and isolate any battery showing abnormalities.
During summer and winter, particular attention is needed due to environmental factors. In winter, keep the battery warm by charging indoors, ensuring the ambient temperature is at least 10 degrees Celsius. Upon receiving a low-battery warning, return immediately.
Summer usage presents additional challenges, as illustrated below:
Batteries require careful handling and storage conditions, including temperature regulation, fire prevention, ventilation, and humidity control.
In the event of a fire, proper firefighting methods are critical. When dealing with polymer lithium batteries, first disconnect the power source, cover the battery with an asbestos blanket, and isolate it with sand to prevent oxygen exposure. Dry powder extinguishers should be avoided.
Identifying scrap batteries is essential before disposal. Look for visible signs such as swelling, leakage, or corrosion. Once identified, store them separately and discharge them in a 1:20 saline solution, no more than three batteries at a time. For optimal safety, consider partnering with certified battery recycling organizations.
Other types of batteries are highly toxic and pose environmental risks if improperly disposed of. Landfill burial or incineration is strongly discouraged.
1. What is the maximum capacity of the plant protection battery?
The battery's capacity depends on its size and weight. However, increasing the weight also increases the energy demands on the drone, necessitating a balance between weight and capacity. Currently, the highest capacity for a single-cell battery reaches up to 30,000 mA.
2. Must someone monitor the battery while charging?
Modern smart batteries come equipped with overcharge protection. Nevertheless, from a risk management perspective, supervision is recommended. Immediate action can mitigate potential hazards if the protection board malfunctions.
3. A P20 battery gets wet in the rain, what should I do?
First, assess whether water has penetrated the battery. P20 batteries have excellent waterproofing, so minor exposure shouldn't cause significant issues. Check if charging remains functional. If the battery overheats or experiences a short circuit, disconnect power immediately.
4. In the northeastern region, winter temperatures drop below freezing. Is this a problem?
While cold storage isn't problematic, always allow the battery to reach at least 10 degrees Celsius before charging.
5. Are drone batteries charged individually or in parallel?
Parallel charging carries risks, especially if the battery voltages differ. Charging a lower-voltage battery with a higher-voltage one can lead to dangerous discharges. Therefore, individual charging is preferred.
This comprehensive guide aims to enhance your understanding of lithium batteries, ensuring safer and more efficient usage across various applications.
Plant protection drone battery use cheats
The Principle and Production Process of Lithium Batteries
Common Battery Issues and Causes
Safety Precautions
Storage Considerations
Disposal of Used Batteries
Question Time