Marine Technical Requirements for Marine Batteries

The marine battery uses a radial rib design and paste-type active material, with stable discharge at high current. It also has a special AGM separator with a customized mix of thick and thin fibers, which improves the liquid absorption height, reduces internal resistance, has a high porosity, and a long service life. The innovative integral structural design gives it an elegant appearance. The grid has excellent corrosion resistance, high sensitivity, and is safe and reliable to use. It is a heavy-duty battery with thick plates in the lead-acid battery series, with a higher capacity than regular batteries. It is suitable for various types of vessels with different tonnages and displacement, such as lake and river enforcement boats, fishery administration boats, yachts, warships, and sea transport ships.The marine battery must meet the following technical conditions for the marine environment

The marine battery must be able to withstand vibration and impact

Vibration can loosen or damage the fixed or connected parts of electrical equipment, which can lead to structural damage or malfunction. Therefore, it must have anti-loosening, vibration reduction, or isolation measures, and a sturdy and durable mechanical structure to resist vibration and impact.

The marine battery must be able to adapt to the inclination and swing caused by continuous tilting and swinging

This destroys the balance of force when the equipment is in its normal resting position, and generates additional force on moving parts, which can lead to equipment failure or damage. It must also be able to adapt to environmental temperatures. Environmental temperature has a significant impact on the performance and service life of electrical equipment. The environmental temperature includes air temperature and sea water temperature.

The marine battery must be able to adapt to the humid, salty, oily, and moldy environment of marine air

The humidity, salt spray, oil mist, and mold in the marine environment can reduce the insulation performance of the insulating material of electrical equipment, and cause rust and corrosion on metal parts. The humid salt spray forms a wet conductive film on the surface of the insulating material, and under humid and hot conditions, mold secretes organic acids that exacerbate the surface's humidity. Oil mist and dust adhering to the surface increase the surface's leakage, and hinder heat dissipation, causing the temperature to rise. The humid water molecules penetrate into the cracks and capillaries of the insulating material, causing an increase in leakage current, which leads to a decrease in insulation resistance.

Many ships and yachts still mainly use traditional water-added batteries, and maintenance-free batteries are not yet widespread. In recent years, China has introduced international technology and developed a comprehensive range of maintenance-free marine batteries. These are environmentally friendly, with low pollution, gradually replacing water-added batteries, and have all passed classification society certification. Moreover, the price of maintenance-free batteries is only slightly higher than that of traditional water-added batteries, but they require no maintenance or refilling during use.

The damage of many electrical equipment is often caused by the thermal breakdown of insulating materials. When the temperature exceeds a certain limit, it accelerates the aging of the insulating material, causing it to lose its insulation properties. Therefore, marine cables, wires, and windings should use insulating materials with higher resistance to heat and moisture, salt spray resistance, mold resistance, good flame retardation, good mechanical strength, and corrosion resistance. They should also be able to adapt to changes in shipboard power system voltage and frequency. The shipboard power system is an independent and limited power grid, where voltage and frequency are both influenced by changes in the load. Therefore, the range of voltage and frequency changes is specified, and the equipment must be able to work effectively within that range. Consistency control is particularly critical in the plate manufacturing process of the marine battery. Immersion in acid during tube plate manufacturing is a detail that must be taken seriously during the entire manufacturing process, otherwise, the consequences can be severe. Many companies use the natural solidification of positive electrode plates, which has little effect on external factors, but has a significant impact on internal factors.