Although new energy vehicles need to be maintained under strict maintenance cycles like fuel vehicles, daily maintenance and upkeep are also necessary.
1. Regular inspection:
If the range of a new energy vehicle suddenly decreases significantly, it is very likely that there is a problem with at least one battery in the battery pack. In this case, you should immediately go to the repair shop to fix it as soon as possible.
2. Charging time should not be too long:
New energy vehicles should avoid overcharging, overdischarging and undercharging, as this will shorten battery life. During use, charging time and frequency should be determined according to actual vehicle conditions. If the battery meter indicator lights up, charge as soon as possible, otherwise the bThe battery will be over-discharged and its lifespan will be affected. And the charging time should not be too long, otherwise it will cause the battery to overcharge and heat up. If the battery temperature exceeds 65°C during charging, charging should be stopped immediately to avoid danger.
3. Please move forward slightly when starting:
If a new energy vehicle accelerates sharply when starting, the battery will discharge with a high current. High current discharge will easily produce lead. sulfate crystals, thereby damaging the battery. The physical properties of battery plates affect lifespan.
4. Charge the battery even if it is parked for a long time:
Some car owners think that if they do not use the vehicle for a long time, they are not worried. about parking the new energy vehicle with power loss, it suffit to charge the car before using it next time. This is a big misunderstanding. For example, if the battery is stored in a depleted state, sulfation will easily occur and lead sulfate crystals will adhere to the plates, which is extremely harmful to the battery. Lithium batteries are damaged when discharged.
5. Prevent exposure and excessive cooling:
If new energy vehicles are exposed to the sun for a long time, the temperature will be too high, which will increase the internal pressure of the battery and cause it to lose energy. water to the battery. This will cause the battery activity to decrease and accelerate the aging of the plates. If stopped in a cold environment for a long time, the battery life will decrease sharply and have a detrimental effect on battery performance.
6. For the same maintenance as gasoline vehicles,refer to gasoline vehicles:
For maintenance of gearbox oil, antifreeze, tires, rubber parts, etc., refer to gasoline vehicles.
New energy battery standards
As an essential component of new energy vehicles, batteries are related to safety and the experience of use and operation. maintenance of cars as power batteries, after long-term use. , they will face With the current development of lithium battery technology, battery degradation is inevitable when the battery life decreases. Battery degradation is an inherent “problem” with lithium batteries. Is there an official national standard for battery attenuation?
According to current policies, during the warranty period, battery performance attenuation cannot exceed 20% . Otherwise, the manufacturer will replace the battery free of charge for the car owner. However, when it comes to battery wear, there is currently no relevant national standard. Different car manufacturers have different methods and identification methods for battery wear. At the same time, there are currently no battery testing agencies on the market open to individuals. ., so we can only rely on the manufacturer to test the battery. From the perspective of battery usage itself, vehicle battery power attenuation is related to many factors.
Second, battery attenuation is related to the design of the vehicle's battery management system, battery quality and performance, and driving habits. Just watch the battery charge and discharge. The charging and discharging of the battery undergoesconstantly undergoing chemical conversion. During the conversion process, other electrolytic substances will be produced, which will gradually affect the electric battery. Therefore, each company's standards are different. mitigation. There will still be some difficulties.
From this point of view, it is not easy to judge the degree of battery degradation. As the number of electric vehicles increases, relevant supporting facilities and battery standards are published, and the official national standards for battery mitigation will be gradually improved.
This article is from the author of Autohome Chejiahao and does not represent the views and positions of Autohome.
New standards on energy batteries
1. Standards for replacing electric vehicle batteries?
20% battery degradation is the replacement standard. Whenhe battery capacity decreases to less than 80% of the new state of the battery, this should be regarded as the end of the battery life, and it should be removed from electric vehicles and enter the phase of staggered use. Therefore, if the attenuation of batteries reaches more than 20% due to quality problems, the manufacturer must replace them free of charge.
2. What are the disposal standards for electric vehicle batteries?
Generally speaking, the standard for the disposal of lithium batteries for new energy vehicles is that the battery capacity is less than 80%. If the remaining capacity is still 70-80%, it would be a huge waste to recycle the battery directly. Proper reuse of lithium batteries is particularly important to reduce battery costs.
In fact, once the capacity of an electric battery drops to 80%,that doesn't mean it can't be loaded and unloaded. This simply means that the charge and discharge capacity will be much less than that of the battery. a new battery, and the driving range will also be much shorter, the number of charging times will increase significantly, which will affect the user's car experience. For example, for an electric vehicle with a range of 500 kilometers according to the working conditions method, even if the battery capacity decreases to 80%.
3. What is the normal voltage difference of new energy electric vehicle batteries?
The normal range of battery voltage difference is 0.05-0.1V. Because during the charging and discharging process of the electric vehicle battery, the voltage difference between Individual battery cells will produce a difference in battery voltage. Under normal circumstances, the dBattery voltage difference should be within 0.05-0.1V. Large or too small, it will affect the life and safety of the battery.
In addition, the battery pressure difference will change with battery life, so regular monitoring and maintenance is required. For users, the battery voltage difference can be reduced by using charger equalization charge or time equalization discharge to ensure battery performance and safe use.
4. What are the national new energy vehicle battery mitigation standards?
The national standard for battery mitigation of new energy vehicles is 20%.
Indeed, the battery of the new energy vehicle constitutes an important element of its power system and its performance directly affects the range and lifespan of the vehicle. According toNational regulations, when a battery is used for three years or more than 100,000 kilometers, its capacity retention rate should not be less than 80% of its original capacity. This standard can ensure that the battery can maintain high cruising range and safety performance, while promoting technological progress and new energy vehicle market development.