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About Maintenance

• 106.

  Should I drain my EV battery before charging?

  No, it is generally not necessary or recommended to intentionally completely drain an electric vehicle (EV) battery before charging. Modern electric vehicles and their battery management systems (BMS) are designed to handle a variety of charging scenarios, and there is no harm in charging the battery from any state of charge.
• 107.

  Do electric cars run cooler?

  Electric vehicles typically run cooler than traditional internal combustion engine vehicles. This is primarily because electric vehicles (EVs) use electric motors with fewer moving parts and operate more efficiently.Here are some reasons why electric vehicles run cooler:
  
  ① Fewer moving parts:
  Electric motors have fewer moving parts than internal combustion engines. There is no need for complex cooling systems to manage the heat generated by multiple moving parts. This simplicity helps reduce operating temperatures.
  
  ② Efficient power conversion:
  Compared to the combustion process in a conventional engine, an electric motor converts a higher proportion of electrical energy into mechanical energy. This high efficiency means less energy is wasted as heat during operation, resulting in lower overall heat generation.
  
  ③ Regenerative braking:
  

  Electric vehicles typically utilize regenerative braking systems to convert kinetic energy back into electrical energy during deceleration. The process generates less heat than traditional braking systems, which use friction to slow the vehicle.

  
  

  ④ No heat of combustion:
  

  Unlike internal combustion engines, which generate large amounts of heat through the combustion process, electric motors do not rely on combustion. Not burning fuel reduces the overall heat generated during operation.

  
  

  ⑤ Improved thermal management:
  Electric vehicles are equipped with advanced thermal management systems to regulate the temperature of the battery pack, electric motor and other components. This ensures that these systems operate within an optimal temperature range, preventing overheating.
  
  ⑥ Cooling strategy:
  Some electric vehicles employ innovative cooling strategies, such as liquid cooling systems, to effectively manage temperatures. Liquid cooling is more efficient than air cooling and allows precise control of the temperature of critical components.
  
• 108.

  How do you keep EV batteries healthy?

  Here are some tips to help keep your electric vehicle battery healthy:

  
  

  ① Avoid deep discharge:
  

  Try to avoid letting the battery's state of charge (SOC) drop to extremely low levels. Deep discharge stresses the battery and causes it to degrade faster.

  
  

  ② Limit exposure to extreme temperatures:
  

  High temperatures will accelerate battery degradation. Avoid exposing your vehicle to extreme heat for extended periods. A thermal management system (if available) can also help regulate battery temperature.

  
  

  ③ Use a moderate charging rate:
  

  While fast charging is convenient, frequent use of high-power fast chargers increases battery wear and tear. Whenever possible, use moderate charging rates to reduce stress on the battery.

  
  

  ④ Avoid high SOC in hot conditions:
  

  In hot climates, try to avoid leaving the battery in a high state of charge for long periods of time. High SOC combined with high temperatures accelerates degradation.

  
  

  ⑤ Charge to 80% during daily use:
  

  For daily use, consider charging the battery to about 80% of its full capacity. This helps extend the life of the battery because it reduces the stress associated with maximum capacity.

  
  

  ⑥ Regular charging and discharging:
  

  Regular use of your battery will help keep it healthy. Moderate charging and discharging of the battery on a regular basis can help extend its service life.

  
  

  ⑦ Avoid long-term storage under high SOC:
  

  If the vehicle is not intended for long-term use, it is recommended to store it in a partially charged state rather than at maximum capacity.

  
  

  ⑧ Use regenerative braking:
  Take advantage of regenerative braking while driving. This feature helps charge the battery during deceleration, improving overall efficiency.
  
• 109.

  What happens to EV batteries?

  The fate of electric vehicle (EV) batteries at the end of their life cycle is an important aspect of the sustainability and environmental impact of electric transportation. Here are some common things that happen to electric vehicle batteries:

  
  

  ① Energy storage and reuse:
  When EV batteries are no longer suitable for vehicle use due to reduced capacity, they may still have sufficient life for other applications, such as stationary energy storage.These batteries can be repurposed to store renewable energy from sources such as solar or wind power for later use.
  
  ② Recycling:
  Recycling is a key component in managing end-of-life EV batteries. Battery recycling involves recovering valuable materials such as lithium, cobalt, nickel and other metals for use in new batteries. This process helps reduce the need for mined raw materials and minimizes environmental impact.
  
  Second Life Applications:
  

  Some EV batteries that are no longer suitable for use in vehicles may still have sufficient capacity for less demanding applications. These batteries can be repurposed for secondary applications, such as providing backup power in homes, supporting off-grid systems, or in industrial settings.

  
  

  ① Disposal:
  If recycling or reuse is not feasible, appropriate disposal methods must be followed. However, it's worth noting that electric car batteries are considered hazardous waste and simply sending them to landfill is not environmentally responsible, as hazardous materials may leach into the soil.
  
  ② Manufacturer recycling program:
  Some electric vehicle manufacturers have recycling programs in place to collect and manage end-of-life batteries. These programs ensure batteries are properly recycled or disposed of in accordance with environmental regulations.
  
  ③ Progress in battery technology:
  Continuing research and development in battery technology aims to design batteries that last longer, increase recyclability and reduce reliance on scarce or environmentally sensitive materials.
  
• 110.

  What is the forever battery for electric cars?

  Electric cars don’t yet have a specific “permanent battery.” The concept of permanent batteries generally refers to highly durable and long-lasting batteries with a lifespan that significantly exceeds traditional electric vehicle (EV) batteries.
  
  Batteries used in electric vehicles, including lithium-ion batteries, have made advances over the years in terms of energy density, charging capabilities and longevity. However, they can still degrade over time due to a variety of factors, including charge and discharge cycles, temperature fluctuations, and overall usage.
  
  Researchers and engineers continue to work on advances in battery technology, seeking to improve energy storage, extend service life and reduce costs. Some promising developments include solid-state batteries, which have the potential to offer higher energy density and longer life than traditional lithium-ion batteries.