Selection of marine VDR batteries.
1. Overview. Marine VDR (Voyage Data Recorder) battery is an important part of the ship safety monitoring system, and its performance and selection are of great significance to ensure the safety of the ship. There are many types of marine VDR batteries, including lead-acid batteries, VRLA batteries, VRLA maintenance-free batteries, and more. When selecting a model, it is necessary to comprehensively consider factors such as the power demand of the ship, battery performance, installation space and maintenance costs.
2. Lead-acid battery.
Lead-acid battery is a traditional marine VDR battery, which has the advantage of mature technology and relatively low technology. Lead-acid batteries have a high energy density and can provide a large current output, which is suitable for marine equipment that requires more power. In addition, the electrolyte of lead-acid batteries is mostly sulfuric acid, which is highly corrosive and requires special explosion-proof and leak-proof measures.
However, the disadvantages of lead-acid batteries are also more obvious, mainly including shorter life cycles, higher maintenance costs and heavier mass. In addition, lead-acid batteries will produce hydrogen during charging, which has certain safety risks.
3. VRLA maintenance-free battery.
VRLA maintenance-free batteries are a new type of marine VDR battery that has the advantages of no water maintenance, longer life cycle, and lighter weight. The valve-regulated maintenance-free battery has a lean liquid design, which avoids the problem of electrolyte leakage through a special sealing structure. In addition, this type of battery is also equipped with a safety valve, which can automatically adjust the pressure when the battery is overcharged or overdischarged, so as to protect the battery safety.
Compared with lead-acid batteries, VRLA maintenance-free batteries have a longer life cycle and lower maintenance costs. In addition, due to its lighter mass, it is possible to reduce the overall load of the ship. However, VRLA batteries are relatively high and may not be suitable for some small vessels.
4. Batteries for communication on ships.
Ship communication equipment is one of the important facilities to ensure the safe navigation of ships, therefore, the selection of suitable communication batteries is also one of the important contents of marine VDR battery selection. At present, the communication equipment commonly used on ships mainly includes radar, GPS, VHF walkie-talkies, etc. The power requirements of these devices are different, so different specifications of communication batteries are required.
For some small ships, there are some lightweight batteries for communication equipment. These specialized batteries generally use new materials such as lithium-ion batteries or nickel-metal hydride batteries, which have a long service life and light weight. For some large ships or special-purpose ships, it is necessary to choose more professional communication batteries to meet their special power needs.
5. Ship black box battery.
The ship black box is one of the important equipment for recording ship navigation data, and the selection of its battery is also very important. The power demand of black box equipment is relatively small, but it has extremely high requirements for data reliability and security. Therefore, when choosing a black box battery, it is necessary to ensure that it has a high degree of stability and reliability.
At present, ship black box batteries generally use lithium-ion batteries or nickel-cadmium batteries. These batteries have a long service life and low weight, while meeting the requirements of black box devices for the accuracy and stability of data recording. When installing, it is necessary to ensure that the position of the black box battery is safe and reliable to avoid interference or damage from the external environment.
VI. Conclusions. To sum up, the selection of marine VDR batteries needs to be comprehensively considered according to the actual needs and conditions of the ship. Different types of marine VDR batteries have their own advantages and disadvantages, and you need to choose according to the actual situation. In the selection process, it is necessary to pay attention to the comprehensive consideration of the safety, stability, life cycle and maintenance cost of the battery. At the same time, installation and maintenance also need to be operated in strict accordance with relevant specifications to ensure the normal operation of the ship safety monitoring system and the reliable recording of data.