Electric car – how does it work?

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Electric cars are gaining increasing popularity as they align with global energy trends and play a vital role in the journey towards decarbonization. With prolonged usage, electric vehicles may demonstrate economic advantages over traditional combustion engine cars. This article will delve into their features, various types, and both their pros and cons.

What does an electric car consist of?

Electric cars often share the same external appearance as their combustion-engine counterparts. There’s typically no need for a distinct body design, although sometimes the running gear may be modified. However, the key distinction lies in the components responsible for propulsion. The vital elements of an electric car encompass:

  • Charging socket – enabling connection of the charging station with the vehicle for current flow,
  • Batteries – energy storage,
  • Inverter (inverter) – converting direct current from the battery into alternating current, necessary for the operation of the electric motor,
  • An electric motor – converting electrical energy into mechanical energy – the flow of alternating current generates an alternating electric field, which in turn is responsible for causing the rotor to rotate,
  • Transmission – gears (usually three) that drive the axles.

electric car

Building an electric car

Fully electric cars differ significantly from traditional vehicles in that they lack several components commonly found in the latter, including a starter, alternator, oil filter, air filter, and timing belt. Moreover, many electric cars do away with a gearbox. This streamlined construction makes electric cars less complex and less prone to mechanical failures.

Hybrid vehicles

Utilizing electricity to propel a vehicle doesn’t always entail entirely forsaking the combustion engine. Some cars employ both technologies, and these are known as hybrid vehicles. There are two fundamental types:

  1. Full hybrid drive: In this scenario, the vehicle can draw power from either the combustion engine, the electric motor, or both. The inclusion of batteries and an electric motor conserves fuel, while the combustion engine extends the car’s range.
  2. Partial hybrid drive: This type does not enable the car to run exclusively on electric power, but it captures and stores energy that is typically lost during braking for later use, improving energy efficiency.

Types of charging sockets for electric cars

Most electric cars come equipped with an alternating current (AC) charging port, which provides the convenience of charging in various locations, including standard home sockets. However, AC charging has limitations in terms of power, offering up to 44 kW with three-phase current or just a few kW with single-phase current. Additionally, the in-car charger can further limit charging power.

For faster charging and reduced battery charging times, higher power levels (e.g., 150 kW) are achievable through the use of direct current (DC) connectors. Two notable DC standards include:

  • CHAdeMO: A popular direct current charging standard in Asia and Europe. It supports charging with power levels of up to 400 kW, with plans to increase its capacity to 900 kW.
  • CCS (Combined Charging System): A modern standard that accommodates both direct and alternating current charging. It can deliver up to 350 kW of power and is anticipated to eventually replace CHAdeMO.

Advantages and disadvantages of electric cars

Electric cars have a number of advantages, including:

  • Environmental friendliness when using renewable energy sources to generate the energy they are powered by,
  • quiet operation,
  • No need for a gearbox),
  • Safer construction thanks to the segmented structure and better possibilities of assembling components and the lack of an internal combustion engine, fuels and oils,
  • Lower operating costs (electricity for driving 100 km costs a few zlotys),
  • Government subsidies for the purchase of an electric car,
  • In some cities, owners of electric cars can count on conveniences such as driving in a bus lane, free parking in paid spaces or entering the very center.

The disadvantages of electric cars include:

  • Long charging time – as with all devices using lithium-ion batteries, it is not possible to charge an electric car immediately, depending on the technology used, it may take up to 8 hours,
  • Short range – varies depending on the car model, in the best models it is approximately 350 km,
  • High price – According to Kelley Blue Book estimates, the average price of an electric car (approx. $56,000) is higher than that of an entry-level luxury car ($51,000).

Is it worth buying an electric car?

While the initial cost of a new electric car tends to be higher, the combination of reduced energy expenses and lower vulnerability to mechanical issues translates to lower overall operating costs in the long run compared to traditional internal combustion engine vehicles. Hence, investing in an electric car can be financially rewarding, particularly if you plan to drive it over long distances.

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