The temperature in winter is getting lower and lower, the daytime temperature is still minus 5 to 18 degrees, and at night it has been on -15 ° C, and the daytime temperature difference is very large, which has a very large impact on the charging and discharging of electric vehicle batteries, especially the charging and storage capacity will be reduced by about 30%.
Everyone knows a principle, when the temperature drops by one degree, the battery charge will drop by 1%. The local temperature is about 0 ° C, the storage capacity of electric vehicles can only reach about 80%, the temperature drops to -15 ° C or more, it drops to about 60%, you think about the low temperature, can your electric car still run far?
The most common problem encountered in the use of electric vehicles in winter is that the mileage is significantly reduced, and every owner who rides an electric vehicle has a deep feeling. These days every day there are customers who come to change the battery, I am based on the detection of battery usage, and then look at the battery factory date to judge whether this set of batteries need to be replaced, not all batteries run far to replace, this is no reason, but also irresponsible to customers, we want to do integrity management.
What are the situations in which the battery needs to be replaced? What are the reasons why the battery is not running far? What should I pay attention to when changing the battery? Today I have one of these three questions to share with you a few of my perennial municipal experience of repairing electric vehicles, let's take a look at it together.
The most common problem encountered by electric vehicles in winter is to reduce the mileage
The distance of electric vehicle running has a direct impact on the temperature, when it is hot, it can run more than 15 kilometers, and when it is cold, it is less than 10 kilometers, at this time, many people suspect that there is a problem with the battery or a problem with the charger. What should we do if the car is not far away?
What methods will the majority of car owners use? There are usually the following ways.
The first is to charge the electric vehicle for a long time; when the electric car is not far away, many car owners think that the battery is not fully charged and affects the mileage, so they take a long time to charge the electric vehicle, either for a day or a night. Is this charging method right? There is also a right, that is, the new battery can be charged in this way when the electricity is used up, but the battery that is used for more than one and a half years or more is not recommended to take this incorrect charging method.
The second point is that the charger is broken; the electric car is not far away, some owners think that it is not fully charged, suspect that the charger is broken, they will generally take a re-borrowed charger to try, many people are directly buying a new charger to use, the result is to use several times or so, in fact, your battery has a problem, there is time and temperature also have an impact.
The third battery with a few years of life expired; the same electric vehicle used for a few years, charging time is getting shorter and shorter, riding mileage is getting less and less, some car owners think that the first two ways, also tried or did not change, they will go to the repair shop to do a test, generally is the battery problem. How can it be said that there is a problem with the battery? Battery is design life, 18 years ago can be used for 3 to 5 years, 18 years after the use of about two years, the use of design years, the battery lead plate will corrode, vulcanization, storage is reduced, battery life will be reduced.
In the event of this problem, the general repair union will do a detailed inspection to find out that the battery is obviously degraded, and the use time will be recommended to replace the new battery when the life expires.
Electric vehicles do not run far, according to the battery usage to make a solution
Electric vehicles do not run far is formed by multi-functional factors, usually there will be three phenomena in front of me, most car owners will also use the method they think is correct, in fact, in the repair of the maintenance is there are several correct solutions, today I share with you.
The first method is not advisable to charge the battery for a long time; charging the battery for a long time should be determined according to the life of the battery.
Duo Bin gave a solution: the new battery power is used to about 30% of the charging time of about 10 hours, one and a half to two years of batteries, charging time of 7 to 8 hours, 2 to 3 years of battery charging time of 5 to 6 hours The longer the time is used, the shorter the charging time will be, and the battery life will be reduced accordingly. The battery has been used for about two years, can not be charged overnight or 10 hours, so long to use the automatic power off charger can also, if it is with the general charger, a long time to the battery will be charged, or early decline. The charger becomes a green light, and it is possible to float for 1 to 2 hours in winter, but it is not advisable to spend too long.
The second method, the charger or other reasons caused by running not far; when we repair the car, there are some owners with the charger to repair or check, the problem is that the movement can be charged, some are directly plugged in is the green light unchanged light.
Solution: move to charge, the wire has a short circuit phenomenon or the parts are loose, which needs to find out the problem of the line, replace a line, is the part loose, and then weld it. Charger plugged in the charging unchanged green light, some of the wires have short circuit problems, some are charger circuit board has been burned out, which needs to be checked for further processing, the parts of the circuit board burned out more, just replace a new one. Don't cross it out, the focus comes later on more important and will help you.
Is it a battery problem that electric vehicles run not far in winter?
Some car owners run not far in the winter electric vehicle, first of all, they suspect that there is a problem with the battery, and they are anxious to replace the battery, even if the new battery is replaced, but in the process of use, it is found that it is not satisfactory, and the effect of the hot day is not achieved, that is, the lead-acid battery in the state of low temperature The common disease of the decline in work efficiency, what is the cause?
The best use of lead-acid batteries is that the temperature is about 25 ° C, which can be fully exerted to 100% efficiency, which is what people usually say is particularly durable and runs a long way.
However, the working chemical and physical reaction of the battery is affected by the temperature, and the storage capacity will see 1% for every degree of temperature drop. When the temperature drops in areas of -15 ~ -20 ° C, the work efficiency of lead-acid batteries can only reach about 55%. That is to say, when it is hot, it can run 20 kilometers with electricity at a time, and now it can only run about 12 kilometers.
What is the state of winter? Need to change the battery? Which state does not require battery replacement, give three methods.
The first method, when it is hot, can run 30 kilometers, when it is cold, it is not recommended to replace the battery. Why is it reduced like this? That is, when the weather is hot, the battery mileage can also run to 30 kilometers, run to about 20 kilometers when it is cold, which is a normal reaction to the drop in temperature, and when the weather is warm, it can run to 30 kilometers and return to normal, and this battery does not need to be replaced with a new one.
The second method, when the battery is hot, it will not run far, and when it is cold, it is recommended to replace it with a new one. Some car owners come to reflect that when the weather is hot, the electric car has not run far, can only run 15 to 20 kilometers, and even 10 kilometers cannot run when it is cold, which will affect the commute to work for a day. In this case, I still recommend that you change a new set of batteries to ensure your daily attendance.
The third method, the battery has been used for several years or the drum is charged, it is recommended to replace the battery with a new one. These two days I am changing the battery every day, I am going to be tested to find that it is a piece of two, voltage deviation of 1 ~ 2V, capacity difference of 3 ~ 5 volts, to see the battery factory date has been used to 2 years or 3 ~ 5 years. I suggest that the owner replace the new battery, his battery can only run a few kilometers or even about 10 kilometers after inquiry, and it has completely failed to keep up with the use of a day.
epilogue
Everyone's electric vehicles in the winter run not far, you can use two simple and effective methods, one is to hit the air pressure enough, the brakes are sensitive, the second is to find warmth when charging, there is a temperature to increase the storage, and there is a point that the charger becomes a green light to float for 1 to 2 hours and then disconnect the power, so that your electric vehicle will run 5 to 8 kilometers more than others. Don't find that the winter is not far away to quickly go to replace the new battery, this is not a good way, after trying these two methods still only run to about 10 kilometers, the change has to be changed.
There are also several solutions shared earlier that can be tried, which are very effective. After reading the article, I think it is helpful to you, remember to follow me.