Detailed explanation of three situations in which electric vehicles may be "sick"

Every time I looked at Tesla on the street, I was about to move.

It didn't take long for my heart to move, and I took practical action. Although I didn't buy Tesla, it was also Tesla's "brother". A delicate and small pure electric car, I personally don't feel like losing Tesla.

However, as a new energy vehicle owner, when I communicated with other new energy vehicle owners, I found that if you encounter the following three situations, you must be careful. Your electric vehicle may be "sick."

The battery capacity declines significantly

Some netizens said to the message that after purchasing a certain pure electric vehicle, they experienced a significant decrease in battery power after driving for more than a year. Originally they could drive about 300 kilometers, but now they can only drive about 250 kilometers. When the battery power reaches 40%, the battery capacity is obviously insufficient.

Decline in battery capacity has always been a headache for new energy vehicle owners. Especially in the low temperature environment in winter, it may lead to large-scale energy loss during the discharge process. This value is within 20% is acceptable. When the temperature returns to normal temperature, the battery storage power will return to the normal state, and the cruising range of the vehicle will return to normal.

At the same time, the owner's habits may also cause the battery power to decay. For example, when the battery gauge of an electric car reaches 20 (that is, 20%), it means that you should charge it. Do not wait for the meter to indicate close to 0 before charging the battery. Otherwise, excessive battery discharge will seriously shorten its life.

Just as the battery power of a mobile phone will drop faster and faster, the battery performance of electric vehicles will also deteriorate to a certain extent after long-term use. The battery capacity decay generally follows a fast first and then a slow mode. Generally speaking, the attenuation of electric vehicles in the first year is relatively large, at about 8%, in the following 2-3 years, it will decay by 4%, and 5-6 years will be year by year. The attenuation is 1%, so the most obvious period of decay of the battery capacity of the electric vehicle is 2-3 years before the vehicle is used.

Detailed explanation of three situations in which electric vehicles may be "sick"

However, when you find that the battery of the electric car is attenuated badly, immediately check whether it is within the warranty period, and contact the manufacturer to measure whether the attenuation value is within the normal range. If it is beyond the normal range and the vehicle is still under warranty, you should negotiate with the dealer or manufacturer to replace the battery for free to protect the rights.

Here are some battery warranty periods for mainstream models:

BYD: BYD's new energy car battery is a lifetime warranty with a battery capacity of 150,000 kilometers in 8 years.

Chery New Energy: Chery New Energy models have a vehicle warranty of 120,000 kilometers for 3 years, and the Sandian system is 120,000 kilometers for 8 years.

JAC New Energy: The warranty period for core components of JAC New Energy vehicles is 150,000 kilometers for 8 years, 100,000 kilometers for electrified components for 5 years, 3,000 kilometers for wearable components for 3 months, and 120,000 kilometers for vehicle components for 3 years.

Beiqi New Energy: Beiqi New Energy's three-electricity system is 150,000 kilometers in 8 years, and the vehicle warranty is 60,000 kilometers in 3 years.

Power interruption while driving

Mr. Hu from Beijing reported that when he was driving an electric car of a certain brand on the fourth ring road of Beijing, the vehicle's power suddenly dropped to 20% when there was still 40% surplus electricity. After a few minutes, the battery was completely dead and stopped. On the main road of the fourth ring road.

It is understood that the sudden jump in electricity caused by Mr. Hu's cold sweat often occurs when there is not much power left.

A small range of power jumps, on the one hand, the algorithm of the remaining power of the battery management system is not ideal, and on the other hand, a voltage rebound phenomenon existing in the battery pool itself, without too much panic.

However, if there is a large power outage, such as 50% of the electricity, it will be gone if you say no. This is definitely abnormal. It means that your pure electric vehicle system has major hidden dangers. You must contact the manufacturer and dealer immediately for testing and maintenance. To avoid safety accidents.

The battery is not charging or charging is insufficient

Sometimes, slow charging is not the most headache, the most terrible is not charging. If your pure electric vehicle is not charging, or is always full, you should pay attention.

Detailed explanation of three situations in which electric vehicles may be "sick"

If it is in the winter with low temperature, don't worry too much if you can't charge it. In order to ensure the safety and life of the battery, car companies have implemented stricter control of charging and discharging strategies at low temperatures to reduce charging current and discharging current. If charging at a low temperature, the charging current is small, and the charging time will become longer.

However, if your electric car has been "idle" for a long time and has not been charged in time, you may also encounter a situation where the charge is not full during charging. Therefore, the usage habits of car owners are very important to avoid overcharging and overdischarging.

Finally, there may be a problem with your car battery and the battery needs to be replaced. Is it the problem of the battery? You need to consult the after-sales staff to repair the battery. However, if the charger is not powered on, it may also be caused by the abnormal indicator light of the charger causing "false full", and the charger needs to be replaced; or the charger and the charging socket have poor contact and the charging socket needs to be replaced...

Whatever the reason, we can't take it lightly when the car is not charged.

It is not terrible for electric vehicles to be "sick", and the most important thing to solve in time!

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