How Does an Electric Vehicle Work?

1 Answers
LeSadie
07/30/25 9:45am
Electric vehicles operate on the principle that a battery supplies current, which is then regulated by a power controller to drive the motor's powertrain system, propelling the vehicle forward. An electric vehicle (BEV) refers to a vehicle that uses an onboard power source as its driving force, employs an electric motor to drive the wheels, and meets all the requirements of road traffic and safety regulations. For cars powered by fuel cells, the chemical reaction process in the fuel cell does not produce harmful byproducts, making fuel cell vehicles pollution-free. Moreover, the energy conversion efficiency of fuel cells is 2 to 3 times higher than that of internal combustion engines. Therefore, from the perspectives of energy utilization and environmental protection, fuel cell vehicles represent an ideal mode of transportation.
Was this review help?
2
5
Share
More Forum Discussions

What Causes a Loud Clanging Sound When Kicking the Tire Hard?

The loud clanging sound when kicking the tire hard may be due to looseness in the rubber bushings of the suspension components. Causes: When kicking the wheel, the gap causes full component collision, resulting in the sound of metal deformation. Recommended Actions: It is advised to inspect the components and perform gap adjustment, lubrication, and tightening. If the noise persists, tire replacement may be necessary. Reducing Shock Absorber Damage: Avoid aggressive driving, as it not only shortens the lifespan of shock absorbers but also significantly impacts other car components. Slow down on bumpy roads, and when driving over speed bumps or rough terrain, try to reduce speed and ideally have both wheels pass over the bump simultaneously to better protect the vehicle.
9
0
Share

Is the Hard Shoulder an Emergency Lane?

Hard shoulder is not an emergency lane. Hard Shoulder: The hard shoulder refers to the part of the shoulder adjacent to the carriageway and paved with a certain strength of road surface structure (including the marginal strip). The 'hard shoulder' is a lane marked by a yellow line on the right side of the highway, mainly used for temporary parking of broken-down vehicles and to facilitate the passage of emergency vehicles in urgent situations. Emergency Lane: The emergency lane on a highway refers to the part of the road adjacent to the right lane, including the hard shoulder, with a width of more than 3 meters and an effective length of 30 meters or more, which can meet the needs of motor vehicle parking. In emergency situations, vehicles can drive or park on the emergency lane.
17
5
Share

How Long Does a Refurbished Battery Last?

Refurbished batteries generally last 3 to 6 months. Daily Inspection: First, check if there are any obvious leaks or deformities on the battery's exterior. If deformities or leaks are found, replace the battery immediately to ensure driving safety. If no issues are detected, properly connect the battery's positive and negative terminals, then turn on the vehicle's electrical self-check to see if the battery's electrolyte level needs replenishing. If replenishment is required, use distilled water or a special dedicated liquid—never use mineral water or tap water. When starting the engine, note that the cranking time should not exceed 5 seconds, and the interval between attempts should be no less than 15 seconds. If the engine fails to start, check if the ignition coil is aged or malfunctioning. Routine Maintenance: Regularly clean the battery. Use a damp cloth to wipe the battery's exterior, removing dust, grease, white powder, and other contaminants that could cause leakage from the terminals and panel. Frequent cleaning prevents excessive buildup of acidic corrosion powder on the terminals and extends the battery's lifespan. Applying specialized grease to the terminals can also help protect the battery.
9
1
Share

What is the solution when a car cannot shift gears after wading through water?

The solution when a car cannot shift gears after wading through water is to pull the handbrake while the car is turned off, then shift into first gear or reverse gear; after starting the engine, release the handbrake, and shift to other gears while the car is moving. After turning off the car, start it again to return to normal. Possible causes of the issue: Internal failure of the gear shift lever assembly; malfunction of the P-lock solenoid valve inside the gear shift lever or failure of the brake switch; incomplete clutch disengagement. Precautions: When driving through water, ensure the engine is running normally, and the steering and braking systems are responsive and reliable. Maintain steady throttle control to provide sufficient and stable power for the car to pass through in one go, avoiding stopping, shifting gears, or making sharp turns midway, especially when the underwater surface is sandy or muddy. Keep an eye on both distant and nearby surroundings to prevent the vehicle from deviating from the correct wading path and causing accidents.
12
3
Share

At what millimeter thickness must brake pads be replaced?

Brake pads should be prepared for replacement when their thickness is less than 0.5cm. Conditions requiring brake pad replacement: If a metallic scraping sound (like iron rubbing against iron) is heard when lightly applying the brakes, the brake pads must be replaced immediately. This indicates that the wear indicators on both sides of the pads are already directly grinding against the brake disc, proving the pads have exceeded their limit. If braking feels unusually difficult, it likely means the pads have lost most of their friction and must be replaced to avoid serious accidents. Tips to extend brake pad lifespan: Emergency braking causes significant damage to brake pads. When driving normally, practice gradual braking or use the pulse braking method to minimize wear. Develop good driving habits to reduce unnecessary braking - first use engine braking to slow down before applying the brakes for further deceleration or stopping; downshifting can also help with speed reduction. When the vehicle shows alignment issues like pulling to one side, get a four-wheel alignment promptly to prevent tire damage and uneven brake pad wear on one side.
18
0
Share

What is the correct way to connect car battery cables?

Car battery cables should be connected positive to positive and negative to negative. Battery cable connection procedure: First, clamp the red cable of the jumper wire to the red positive terminal of the "disabled vehicle". Then clamp the other end of the red cable to the red positive terminal of the "rescue vehicle". Clamp the black cable to the black negative terminal of the "disabled vehicle". Next, clamp the black cable to the black negative terminal of the "rescue vehicle". Start the engine of the "rescue vehicle" first, then start the engine of the "disabled vehicle". If the disabled vehicle still cannot start, check whether the metal contact parts have poor contact. Cable removal procedure: First, remove the black cable from the "disabled vehicle". Then remove the black cable from the "rescue vehicle". Next, remove the red cable from the "rescue vehicle". Finally, remove the red cable from the "disabled vehicle".
4
1
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.