Simplified Drive-train Architectures of Different EVs

Architectures of main Electric Vehicles -

Battery electric vehicle

Hybrid electric vehicle

Range extended electric vehicle

Fuel cell electric vehicle

Architecture of Solar Electric vehicle -

solar electric vehicle

Architectures of Battery Electric vehicles -

Conventional drive train

Single gear transmission architecture

Integrated singe gear and differential architecture

Separated EM and fixed gearing architecture

Fixed EM and gearing architecture

In-wheel drive

Architectures of Hybrid electric vehicle -

Parallel structure

Series structure

Series-parallel structure

Complex structure

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Introduction to the Design Process

Accreditation Board for Engineering and Technology (ABET) Definition of Design - • Engineering design is the process of devising a system, component, or process to meet desired needs. • It is a decision-making process (often iterative), in which the engineering sciences and mathematics are applied to convert resources optimally to meet a stated objective. • Among the fundamental elements of the design process are the establishment of objectives and criteria, synthesis, analysis, construction, testing and evaluation. • Mechanical design means the design of components and systems of a mechanical nature—machines, products, structures, devices and instruments. • For the most part mechanical design uses mathematics, materials, and the engineering-mechanics sciences. • Additionally, it uses engineering graphics and the ability to communicate verbally to clearly express your ideas. • Mechanical engineering design includes all mechanical...

Common Trouble/Difficulty/Problems Related to Advanced Electric Vehicle

Time for charging - No matter how much we love electrical cars, we often don’t realize that it takes a lot of time to charge them. So, if you have to go somewhere in an emergency and you forgot to charge your car, you will be in for a difficult time. However, if you are willing to spend more money on companies such as Tesla and Porsche, they have fast charging abilities that can recharge the car in less than half the time. Obviously, even a supercharging speed cannot compare with filling the car with petrol or gas. Repairing - The repairing costs for electric vehicles are still quite high. This is because mechanics still need to learn new technology. So, it is essential that people are trained before electric vehicles become part of the mainstream. Therefore, the market is still not ready for a complete transition to electric vehicles. Weather conditions - In winters, electric vehicles may lose electric power. So, your car might not opera...

Braking system in Electric vehicle (Regenerative braking system)

Moving vehicles have a lot of kinetic energy, and when brakes are applied to slow a vehicle, all of that kinetic energy has to go somewhere. Back in the Neanderthal days of internal combustion engine cars, brakes were solely friction based and converted the kinetic energy of the vehicle into wasted heat in order to decelerate a car. All of that energy was simply lost to the environment. Fortunately, we have evolved as a species and developed a better way. Regenerative braking uses an electric vehicle’s motor as a generator to convert much of the kinetic energy lost when decelerating back into stored energy in the vehicle’s battery. Then, the next time the car accelerates, it uses much of the energy previously stored from regenerative braking instead of tapping in further to its own energy reserves. How well does regenerative braking work? To evaluate regenerative braking, we really need to look at two different parameters, efficiency and effectivenes...

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