The hidden advantages of lead-acid batteries in deep-sea exploration equipment

Time：2025-03-19 09:57:32

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In traditional cognition, lead-acid batteries seem to have lagged behind all kinds of new battery technologies, but from a cross-industry perspective, it will be found that it has hidden advantages in deep-sea exploration equipment that cannot be ignored.

In the frontier of deep-sea exploration, the equipment's energy supply is crucial. In traditional cognition, lead-acid batteries seem to have lagged behind all kinds of new battery technologies, but from a cross-industry perspective, it will be found that it has hidden advantages in deep-sea exploration equipment that cannot be ignored.

## Excellent environmental adaptability

The deep sea is an extreme environment with huge water pressure and constant temperatures as low as 2-4 ° C. Lead-acid batteries are stable at low temperatures, which is one of their outstanding advantages. Compared with some temperature-sensitive lithium batteries, lead-acid batteries lose relatively little capacity at low temperatures. For example, in the experiment simulating the low temperature environment of the deep sea, the capacity of the lithium battery may decrease by 20%-30% at 0 ° C, and the capacity of the lead-acid battery may decrease by about 10%-15%. This stable output characteristic at low temperature ensures that the deep-sea exploration equipment can operate continuously and reliably, and the performance of the equipment will not be greatly degraded due to the low ambient temperature.

## High reliability and stability

There is no room for error in deep-sea exploration missions, and the reliability of equipment is crucial. The lead-acid battery has a simple structure and is mainly composed of plate, electrolyte and separator. This simple structure means less risk of component failure. Its working principle has been verified by long-term practice, and the technology is highly mature. In the past few decades of Marine and some underwater applications, lead-acid batteries have shown extremely high stability. When the detection equipment is performing tasks in the deep sea, a stable power supply can ensure that key components such as sensors and communication equipment continue to work normally, avoiding data loss or device damage caused by battery faults, and reducing the risk of the entire detection mission failure.

## Cost effective

Deep-sea exploration equipment is expensive to develop and maintain. The cost advantage of lead-acid battery is obvious, its raw material lead and sulfuric acid sources are wide, the production process is mature, and the cost is relatively low. Compared with high-performance lithium batteries, the price of lead-acid batteries may be only a fraction of or less. This is of great significance for the large-scale deployment of deep-sea exploration equipment. For example, when building a multi-node deep-sea exploration network, the use of lead-acid batteries as an energy source can significantly reduce the initial investment cost. At the same time, the recycling system of lead-acid batteries is perfect, and the recovery rate of waste batteries is high, which can further reduce the long-term use cost and improve the cost effectiveness of the entire project.

## Good electromagnetic compatibility

In the complex electromagnetic environment of the deep sea, electromagnetic compatibility of equipment is the key. The electromagnetic interference generated by the lead-acid battery in the working process is very small. Compared with some new batteries using complex electronic components and high-frequency charging and discharging mechanisms, lead-acid batteries will not cause electromagnetic interference to precision sensors and communication antennas in deep-sea detection equipment, ensuring accurate data transmission between devices and stable signal reception. This enables the detection equipment to accurately obtain deep-sea environmental data, avoid data errors or communication interruptions caused by electromagnetic interference, and provide reliable data support for deep-sea scientific research.

Lead-acid batteries, with their unique advantages in environmental adaptability, reliability, cost-effectiveness and electromagnetic compatibility, still occupy an important position in deep-sea exploration equipment. Although new battery technologies continue to emerge, in the case of fully considering the special needs of deep-sea exploration, these hidden advantages of lead-acid batteries make them a choice that cannot be ignored in the field of deep-sea exploration energy, and continue to contribute to human exploration of the mysterious deep-sea world.

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