Exploring the Versatility of a 48V Lithium Battery Charger: Usage and FAQs

Exploring the Versatility of a 48V Lithium Battery Charger: Usage and FAQs

Looking for a reliable charger for your e-bike, off-grid marine facility, RV, golf cart, or other applications? A 48V lithium battery charger offers maximum efficiency and convenience, catering to various devices. In this guide, we’ll delve into its usage principles and maintenance tips for optimal performance.

Requirements for propellers on mechanical properties of propulsion motors

Requirements for propellers on mechanical properties of propulsion motors

The propeller is the working object of the propulsion motor, and the characteristics of the propulsion motor must be adapted to the working characteristics of the propeller, so that they can work well with each other. The following takes DC electric propulsion as an example to 

Propeller reversal characteristics

Propeller reversal characteristics

When the speed is constant, the relationship curve Mt=f(n) between the resistance torque and the rotational speed during the propeller reversal process is called the propeller reversal characteristic curve. The reverse characteristic curve of the propeller has a very peculiar shape, as shown in Figure 

Free sailing characteristics and mooring (anchoring) characteristics of propellers

Free sailing characteristics and mooring (anchoring) characteristics of propellers

Propeller characteristics refer to the relationship curve between propeller torque, power and rotational speed, that is, M=f(n), P=f(n) curves. The most commonly used are the following three typical characteristic curves: (1) Free navigation characteristics My=f(n), Py=f(n); (2) Mooring characteristics or anchoring characteristics Mz=f(n), Pz=f(n); (3) 

Interaction of propeller and hull

Interaction of propeller and hull

The open-water properties of a propeller refer to the hydrodynamic performance of an isolated propeller in a uniform flow field. The ship resistance is generally considered the resistance of the isolated hull alone. The actual propeller works at the stern of the ship. The ship 

The working characteristics of the propeller and the resistance of the ship

The working characteristics of the propeller and the resistance of the ship

The working characteristics of the propeller For a propeller with a certain geometry, its thrust coefficient KP, drag torque coefficient KM and efficiency ηP are only related to the advance speed ratio J, and the relationship between KP, KM, ηP and J is called the propeller characteristic curve. 

Blade profile and blade area

Blade profile and blade area

The profile of the blade can be represented by the front and side views of the propeller. The front view of the propeller is seen from the back of the ship to the bow, and the side view is seen from the side of the 

Surface pitch and blade section of the propeller

Surface pitch and blade section of the propeller

surface pitch of the propeller The blade surface of the propeller blade is a part of the helical surface (see Figure 1a), so the intersection of any cylindrical surface that is coaxial with the propeller and the blade surface is a segment of the helix, 

The shape and name of the propeller

The shape and name of the propeller

The propeller is commonly known as the vehicle blade, and its appearance is shown in Figure 2-1. The propeller is usually installed at the stern of the ship (but there are also some special ships equipped with propellers at the fore and aft, such as 

Current Status and Development Trend of Electric Propulsion

Current Status and Development Trend of Electric Propulsion

Current status of electric propulsionAt the end of the 20th century, countries all over the world are keen on researching ship electric propulsion technology. More than 80% of newly built ships use electric propulsion, and the proportion is getting higher and higher. In addition, shipbuilding