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• 136.

  Do EV brakes last longer?

  The service life of electric vehicle brakes can be affected by a variety of factors, and there is no general guarantee that electric vehicle brakes will always last longer than brakes on conventional internal combustion engine vehicles. However, in some cases, certain aspects of EV design can help extend brake life.
  
  One important factor is regenerative braking. In electric vehicles, regenerative braking systems capture kinetic energy during deceleration and convert it into electrical energy. This means that traditional friction brakes (including brake pads and discs) are used less frequently in daily braking. Therefore, in situations where regenerative braking is the primary method of vehicle deceleration (such as during gradual deceleration), wear on the friction brakes may be reduced, potentially extending their service life.
  
  On the other hand, aggressive driving, high-speed braking, or situations where regenerative braking is less effective (for example, when the battery is fully charged or during hard stops) may result in increased use of traditional friction brakes, affecting their service life.
  
• 137.

  Is a 12-volt battery common in hybrid vehicles?

  Yes, 12-volt batteries are common in hybrid cars, just like they are in conventional combustion engine cars. While hybrid vehicles have high-voltage batteries to power electric motors or assist internal combustion engines, they still require 12-volt batteries for a variety of auxiliary systems, including lights, electronics and controls.
  
  The 12-volt battery in a hybrid car is similar to the standard lead-acid battery used in conventional cars. Its main purpose is to provide power to start the internal combustion engine and support the vehicle's electrical components when the engine is not running or when power demand is high.
  
• 138.

  Why is higher voltage better for EV?

  Higher voltages are advantageous for electric vehicles (EVs) for the following reasons:

  
  

  ① Efficiency: Higher voltage enables more efficient power transmission.
  ② Reduce heat generation: Lower current is associated with higher voltage, which can reduce the heat generated in electrical components and wiring. This is important both for energy efficiency and the longevity of the components.
  ③ Thinner wires: At higher voltages, thinner wires can be used to transmit the same power, reducing the weight and cost of the electrical system. For a given power level at a lower voltage, thicker wire is needed to handle the higher current, and thicker wire is heavier and more expensive.
  ④ Smaller, lighter components: Higher voltage systems can use smaller, lighter components to achieve the same power output. This benefits the vehicle's overall weight and size, helping to improve efficiency and performance.
  ⑤ Regenerative braking efficiency: Regenerative braking is a common feature of many electric vehicles and is more efficient at higher voltages. During regenerative braking, the electric motor acts as a generator, converting kinetic energy back into electrical energy. Higher voltage allows for more efficient energy recovery during braking.
  ⑥ Charging efficiency: Higher voltage is also conducive to fast charging. Many high-power fast charging stations operate at higher voltages to provide more power to electric vehicles in less time.
  ⑦ Power system performance: A higher voltage system can provide more power to the electric motor, thereby helping to improve the vehicle's acceleration and overall performance.
  
• 139.

  Are EV batteries high-voltage?

  Yes, EV batteries run at high voltages. The voltage of an electric vehicle battery pack depends on the design and configuration of the specific vehicle model but is typically much higher than that of conventional vehicle systems. Electric vehicle batteries typically consist of many individual cells connected in series and parallel to form a battery pack. Each cell produces a voltage, and when these cells are connected in series, the voltage adds up.
• 140.

  Does an EV have a handbrake?

  Electric vehicles often have a parking brake, often called a "handbrake" or "emergency brake", similar to conventional vehicles.  However, the mechanism for engaging the parking brake may be different in electric vehicles.