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Charging electric vehicles, is every electric vehicle owner to go through a process, it is like a car refueling, is to use this type of vehicle, it is inevitable, but to charge the electric vehicle, will not be as simple as refueling the car, charging not only need to pay attention to whether it is standardized, because not standardized charging, will also hurt the battery, in addition, charging also need to wait for a long time.
Generally speaking, charging ordinary electric vehicles, basically within 6 to 8 hours, can be fully charged, and the meaning of full charging means that the charger's indicator light from the charging state is a red light to a green light, but some owners asked me a question through private messages, charging the electric vehicle themselves, why charge 8 hours or red light? In view of this situation, the small connoisseur has summarized the common 4 key reasons, which are shared with you below, hoping to play a reference role when you encounter this situation.
The first reason for the unchanging green light: dehydration of the electrolyte
The battery of electric vehicles is currently mainly based on lead-acid batteries, and an important part of lead-acid batteries include electrolytes that are easy to evaporate, although the current lead-acid batteries are basically maintenance-free, however, this maintenance-free is basically 3 years, if the owner has irregular reasons for daily charging and discharging, the electrolyte of the battery will be consumed in advance.
Therefore, when the electric vehicle charging encounters this kind of long-term charging and does not change the green light, the electric vehicle battery has been used for one or two years or even longer, the first reaction is that the battery electrolyte is dehydrated, and the judgment method is also very simple, has not changed the lamp, unplug the power supply, touch the battery, if it is particularly hot, that is, the battery electrolyte is missing, this time we need to properly supplement the battery "electrolyte".
The second reason for the unchanging green light: the thermal effect sensor of the charger fails
What is the red light, when is the green light, in fact, it is necessary to rely on the charger for the internal voltage monitoring of the battery, a judgment and transformation, however, the charger is not actually a high-precision equipment, it will be affected by the impact, temperature and other factors, so that its judgment is not accurate or deteriorated.
If you encounter high temperature weather, this time to charge the electric vehicle, it is easy to encounter the charger's thermal effect sensor failure, may have been fully charged, it can not accurately put the indicator light to show the fully charged green light, but in theory, the charging efficiency of high temperature weather is actually faster, usually need 8 hours to fill, high temperature actually only needs 6 to 7 hours to fill, therefore, to 8 hours, even if there is no light, it is also full, you can directly unplug the charger, If you are not at ease, you can check whether the battery of the dashboard is fully charged.
The third reason for the unchanging green light: the charger is aging and damaged
This is also one of the common situations, the charger is a relatively low cost of components, and its life is limited, basically about 2 years, but it is not easy to the overall direct failure of the parts, may only be part of the battery inside the resistance failure, this time is easy to monitor the voltage is not accurate.
And once the voltage monitoring is not accurate, and even some of the parts that control the indicator light becomes green, it will cause the charger to charge for 8 hours, 9 hours, and even never become a green light, which is easy to cause the battery process, it is recommended that the owner do not "make it up", you can directly replace the new charger, after all, compared with the damage battery, directly replacing the new charger is actually more cost-effective.
The fourth reason for the unchanging green light: the battery capacity is too large
Although most electric vehicles are charged within 6 to 8 hours, but this is not absolute, now some high-endurance models, a charge endurance can achieve 200 kilometers, and the reason why it can achieve such a high endurance is because it has a larger capacity battery, providing more power to drive the vehicle.
And the larger the capacity, the greater its storage capacity, to 20AH battery as an example, it takes about 6 hours to fill, and if the battery capacity reaches 38AH, it takes more than 8 hours, although there are now fast chargers, but this fast charge is damage to the battery, merchants generally do not recommend the use, therefore, the owner can only spend more time in the charging process, which is inevitable.
The above is about the electric vehicle charging time, the time is more than 8 hours, but still the common 4 reasons for the existence of the green light, when we encounter this situation, we only need to "enter the seat" to solve it, at the end of the article, the small connoisseur is answering a question that some netizens are concerned about, when the electric vehicle charger turns green, should not be unplugged immediately.
My answer is "should not", the charger becomes green Although the general concept refers to the electric vehicle has been full, but this is actually not accurate, correctly speaking, the electric vehicle charger becomes green, but the battery is full of about 95%, after turning green, the charger will also give the battery input current, generally around 10 to 30 minutes, which is also known as "float charge", only after completing this last 5% or so of charging, the charger should be unplugged.
Charging electric vehicles, in the process will inevitably encounter some problems, I hope the above content can help you answer the question about the charger to change the lights, you still have the confusion of which electric vehicles, but also welcome everyone to comment, together to exchange answers.