In this article explains how electric cars work, detailing their parts and functions to provide a comprehensive understanding. 
Electric cars are becoming very popular these days. There are several reasons for a lot of people are continuing showing interest in these vehicles because they create less pollution than gasoline-powered or diesel cars. An electric vehicle (EV) is powered by a battery and it does not need any type of fossil fuel. While conventional vehicles use an internal combustion engine and gasoline or diesel as fuel, electric vehicles use electrical energy that is stored inside the high voltage battery. So they emit zero emissions and are environmental friendly, especially in cities.
How Do Electric Cars Work?
When the driver presses the accelerator pedal, the controller takes input and regulates the vehicle's speed by changing the frequency or voltage of electrical energy from the batteries and inverter. This energy is then used by the motor stator to create a magnetic field, causing the motor rotor to rotate and transmit mechanical energy to turn the car's gears. As the gears rotate, the wheels turn, and the car moves. During braking or deceleration, the motor acts as an alternator, generating electrical energy sent back to the battery through Regenerative Braking.
What is the difference between an Engine and an Electric Motor?
An electric motor refers to a machine that converts electrical energy into mechanical energy, while an engine does the same thing but specifically using thermal energy. when talking about converting thermal energy into mechanical energy, It means combustion not electric. In other words, an engine is a type of motor, but a motor is not necessarily an engine.
Electric Car Components
- Traction Battery Pack
- Power Inverter
- Controller
- Electric Traction Motor
- Charger
- Transmission
- DC/DC Converter
- Auxiliary Battery
- Thermal Cooling System
- Charging Port
Key Components of Electric Cars
The basic main elements of electric cars installed in almost all types of electric cars:
#1 Traction Battery Pack
The Main function of the battery in an electric car is a storage system of electrical energy in the form of Direct Current (DC) electricity. The battery stores electrical energy and is the equivalent of a fuel tank in an internal combustion engine. If it gets a signal from the controller, the battery will immediately transmit DC electrical energy to the inverter and then used to drive the traction motor. The type of battery used is a rechargeable battery arranged laid out as a big flat panel under the belly of the electric cars such a way that it is called traction battery pack. It has a Battery Management System (BMS) mange the electrical current flow in and out of the battery to protect the battery and extend its life. Every EV is going to have a BMS that is designed specifically for the battery in the car.
The range will be higher with increasing kW of the battery. The lifespan and performance of the battery depending on its design. There are various types batteries used in electric cars. The most widely lithium-ion batteries used.
#2 Power Inverter
The main function of the inverter to change the Direct Current on the battery into an Alternating Current (AC) for powering the electric motor. In additionally, the inverter on an electric car also has a function to converts the AC current generated during regenerative braking into DC current and then used to recharge the battery. This type of inverter used in some electric car models is the bi-directional inverter category.
#3 Controller
This electric car component main functions as a regulator of electrical energy or electrical power in the battery pack to the inverter so that it can drive the traction motor. The controller gets a signal from the electric car pedal which is set by the driver will determines the speed of the vehicle and the frequency variation or voltage variation that will input to the electric motor. It also controls the torque produced. In other words, this component manages the flow of electrical energy delivered by the traction battery, controlling the speed of the electric traction motor and the torque it produces.
#4 Electric Traction Motor
The electric traction motor is the main component of an electric vehicle. The motor converts electrical energy into kinetic energy or mechanical energy. This means it functions in moving the electric car wheels using the energy generated from the traction battery pack. An electric motor is the main component that differentiates an electric car from a conventional car. An important feature of an electric motor is the regenerative braking mechanism. There are basically two types of motors DC and AC motors. In general, the type of electric motor used is the brushless DC (BLDC) motor.
Other Essential Electric Car Components
#5 Charger
Charger is a battery charging device. A charger is a device that converts AC electricity which comes from outside sources such as the utility grid or solar power plants, into DC electricity which in turn charges the electric vehicle batteries where that energy is stored.
There are two types of electric car chargers:
On Board Charger
This charger is located and installed in the car.
Off Board Charger
This charger is not located or not installed in the car.
#6 Transmission
It is used to transfer the mechanical power from the electric motor to drive the wheels, through a gearbox. The advantage of electric cars is that they do not require multi-speed transmissions. The transmission efficiency should be high to avoid power loss.
#7 DC/DC Converter
This one of electric car parts that to converts higher-voltage DC power from the traction battery pack to the lower-voltage DC power needed to run vehicle accessories with low power requirements can still be supplied properly and recharge the auxiliary battery.
#8 Auxiliary Battery
The main function of this component is as a flow of electric current or a backup power provider that is used to turn on various accessories in electric cars. It prevents the voltage drop, produced during engine start from affecting the electrical system.
#9 Thermal Cooling System
This system is responsible for maintains a proper operating temperature range for the main components of an electric vehicle such as an electric motor, controller, etc. It functions during charging as well to obtain maximum performance. It uses a combination of thermoelectric cooling, forced air cooling, and liquid cooling.
#10 Charge Port
The charge port connects the electric vehicle to an external supply in order to charge the traction battery pack. The charge port is sometimes located in the front or rear part of the vehicle.
Conclusion:
That’s it. Thanks for reading. I hope I have covered everything about the “Electric Car Components” It would be helpful if you could let me know if there was anything I missed or if you have any doubts about anything I wrote.
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