How long is electric car battery life? How can I make the electric car battery longer?

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - Mea Hoolako Uku Uku

How long is electric car battery life about electric bicycle batteries, many people will be tangled. How long does a set of electric car batteries (that is, the battery) how long? Why have some people's battery can be used in 2-3 years, while some people's battery is scrapped in less than a year? How long is the life of an electric car battery? In general, the battery of the electric bicycle is consumable, and its service life is only 1-1.5.

The year (300 ~ 400 cycles), the length of life is a big relationship with the daily use and maintenance of users. The reason for the life of the electric vehicle battery 1. The process of lead-acid battery operation is the process of electrochemical reactions.

When charging, the lead of the lead in the lead of the lead, the lead is reduced to the lead of the lead when discharged. The lead of sulfate is a very easy crystallization. When the cell concentration of the electrolytic solution in the battery is too high or when the static idle time is too long, it will be a group, and a small crystal is formed, and these small crystals are further attracted to sulfuric acid around the surrounding sulfuric acid.

Lead, just like a large inert crystalline in the same way, the crystal sulfate is not only restorated into the lead, but also attached to the electrode plate, resulting in a decrease in the electrode plate, which is called vulcanization. That is, the aging. At this time, the battery capacity will gradually drop until it cannot be used.

2. The reason for the special working environment of electric bicycles is as long as it is a battery, and it will vulcanize during use, but the lead-acid battery in other fields has a longer life than the lead-acid battery used on the electric bicycle, because electric bicycles Lead acid batteries have a work environment that is more likely to vulcanize. 1 Depth discharge The battery is only one-way discharge when ignition is ignited.

The power generation will be automatically charged with the battery after ignition, and does not cause the battery depth discharge. The electric bicycle is impossible to charge when riding, often more than 60% depth discharge, deep discharge, the lead concentration of sulfate, vulcanization will be quite serious. 2 large current discharge electric vehicles 20 km cruise currents are generally 4A, which has been higher than the battery operating current in other fields, and oversized electric vehicles are greater.

Battery manufacturers have been charged by 70%, and 60% of 2C discharge is 60%. After such a life test, there are many batteries that can reach the charging and discharge cycle of 350 times, but the actual effect is far from the effect. This is because the high current work has added 50% discharge depth, and the battery will accelerate vulcanization.

Therefore, the battery life of the electric three-wheeled motorcycle is shorter, because the body of the three-wheeled motorcycle is too heavy, the working current is 6A or more. 3 The charge and discharge frequency is high in the backup power supply. Only when power-on is powered down, if you stop 8 times a year, you need to reach 10 years of life, just use 80 cycles charging life, and electric car Annual charge cycle more than 300 times more common.

4 Short-term charging, due to electric bicycles is a vehicle, it can be charged, and it is necessary to charge 36 volts or 48 volts within 20 hours of 8 hours, which must increase the charging voltage (generally a single section 2.7 ~ 2.9 volts).

) Battery's vulcanization phenomenon. 5 After the discharge is discharged, it cannot be charged as a vehicle. The charging and discharge of the electric bicycle are completely separated.

After the discharge is difficult, it is difficult to charge in time, while a large amount of sulfate, lead, for more than half an hour, is not charged to be a lead, Vulcanized into crystals. 3. The reason for battery production is aimed at the particularity of the lead-acid battery for electric bicycles, and various methods have taken a variety of methods.

The most typical way is as follows: 1 Number of new increases. Change the original design of 5 pieces of 6 pieces to 6 pieces of 7 pieces, 7 pieces of 8 tablets, or even 8 pieces. Reduce the capacity of the battery capacity by thinning the thickness and the partition, the number of newly enhanced plates.

2 Improve the specific gravity of the sulfuric acid of the battery, the proportion of the sulfuric acid of the floating battery is generally between 1.21 to 1.28, and the specific gravity of the sulfuric acid of the electric bicycle is generally around 1.

36 to 1.38, which can supply a large current to the initial stage of the battery. capacity.

3 Dissivity and proportion of lead-proof lead in the positive electrode active substance. The newly increased lead of the newly increased electrochemical reaction substance participating in the discharge, and added a discharge time, and added battery capacity. Through these measures, the initial capacity of the battery satisfies the capacity requirements of electric bicycles, especially the characteristics of large current discharge of the battery.

However, the polar plate has increased, the capacity of sulfuric acid is reduced, and the heat of the battery leads to a large amount of water, and the battery's micro short circuit and the probability of the lead branch bridge have increased. Increase the proportion of sulfuric acid to increase the initial capacity of the battery, but the vulcanization is more serious. One of the most basic principles of the sealing battery is that after the positive electrode is oxygen, the oxygen is directly to the negative electrode plate, which is absorbed by the negative plate, and the parameter of the technical indicator of the assessment battery is called sealed reaction efficiency.

This phenomenon is called oxygen circulation. In this way, the battery's loss of water is rare, and the maintenance is maintained, it is exempt from water. To this end, it is required to be larger than the positive electrode plate capacity, but also known as negative transition.

The new positive electrode active substance is inevitable, the negative transition is reduced, and the oxygen circulation is deteriorated, and the loss of water is added, which will cause vulcanization. Although these measures increase the initial capacity of the battery, it will cause water and vulcanization, and loss of water and vulcanization will contribute to each other. The final result is sacrificed the life of the battery.

There is also a pole assembly doubeller problem. It is easy to show that the soldering is a polar plate. And each battery has a ticker, which is 15 solder joints.

There are 6 single single, with 90 solder joints, and a set of batteries consists of 3 12V batteries, with 270 solder joints. If there is a solder spot, the single-handed capacity is lowered, and the single-handed formation is behind, causing the entire battery, the battery will form a serious imbalance, so that this set of batteries fails in advance. Even if the solder is controlled in one thousandth, the average of the cells will have a group of batteries per 37 batteries, which is absolutely unable to allow.

The battery of the lead calcium alloy sheet is precipitated when the calcium is precipitated when welding, so that many battery manufacturers prefer to use low hem alloy grid without using lead calcium alloy. The low-ruthenium alloy plate is lower, the battery is large, the water is relatively serious, and the battery is easier to vulcanize. 4, the reason for electric bicycle production, most cars have a line loss plug, many dealers will take a speed to recruit customers.

Some caf mills simply go to the factory, which can attract customers with heavy vehicles, and can reduce costs. Such cars are very large when driving at high speed, which will seriously reduce battery life. The lowest protection voltage of 12V lead-acid batteries is 10.

5V. If it is a 36V battery pack, the minimum retention voltage is 31.5V, and most of the controller used in most vehicle manufacturers is also 31.

5V. The surface is correct, however, when only 31.5V voltage left in the 36V battery pack, due to the poor capacity of the battery, there will be a battery voltage lower than 10.

5V, the battery is in an over-discharge state. At this time, the battery capacity of over-discharge decline sharply. At this time, the damage impact on the battery is not only the single battery, but it affects the life of the entire set of batteries.

In fact, it has been 27V after the battery voltage is below 32V, and the new renewal capacity is less than 2 kilometers, but the damage to the battery is very large. As long as such a situation is 10 times, the battery capacity will be less than 70% of the nominal capacity. In addition, some users have found that the battery is under under pressure.

After 10 minutes, the battery does not undervolt, and it is taken to travel, which is more destroyed, and most cars are not given to the user. At present, there are adjustable potentiometers inside the most controller, and this adjustable potentiometer vibration drift is more serious. In the price competition, in the face of users who have more attention to the outside of the car, there are very few products that use anti-vibration precision multi-zip potentiometers.

Such controllers have a vibration drift and is not surprising. 5, the cause of the charging equipment is widely circulated by the industry: the battery is not used, is contrary. In order to satisfy the short-term high-capacity charging of the electric bicycle battery, in three-stage constant voltage limit, it is necessary to increase the constant voltage to 2.

47V ~ 2.49V. In this way, it is great to exceed the battery positive electrode panel anterior oxygen voltage and negative electrode plate.

Some charger manufacturers' products In order to reduce the instructions of charging time, improve the current of constant voltage transfer, so that after the charging indication is filled, it has not been filled with electricity, relying on improving the floating voltage to make up for. In this way, many of the floating voltage of the charger exceeds the single-single voltage 2.35V, which is still in a large amount of oxygen in the floating stages.

The oxygen circulation of the battery is not good, so it is also constantly exhausting in the floating stage. The constant voltage value is high, ensuring charging time, but sacrificed is lost water and vulcanization. The constant voltage value is low, the charging time and the charge are difficult to ensure.

In the improved battery grid alloy, improve the gas potential, improve the oxygen circulation performance, improve the sealing reaction efficiency, control the highest charging voltage of 2.42 V or less, that is, the hydrogen hydrogen potential. This will inevitably lead to an extension of charging time, which must be added to the large current charging (current flow charging), to improve the decimalized negative pulse, improve the charging acceptance ability of the battery, and charge more when the large current is charged Some power, shorten charging time.

70% of 2C current charging, is the battery to charge the battery when the battery is relatively large, and the battery is smaller. The battery is basically not higher than the severe hydrogenation voltage. Once higher than the chloride voltage, the battery will be rapidly lost.

With such chargers, you must use continuous charge and discharge, if you stop charging a few days in the middle, the battery will have more serious vulcanization and failure in advance. The user uses the battery that it is impossible to ensure that each time is used, and it will be charged in time, and there is no timely charging in time, and the vulcanization of the battery will accumulate. Most charger manufacturers say that the vehicle factory does not accept charger that can guarantee battery life due to price factors.

It should be acknowledged that this is the case, but there are developing, large-scale big companies do not buy a good charger. Some charger manufacturers exaggerate some functions, and the effect of finished products is not as good as it is. There are still many functions that are the functions of the sales concept, the effectiveness is limited.

6. Other reasons, there are many batteries in the monomer test, but the result is different from the series of battery packs, due to the different capacity, open circuit voltage, charged state, the degree of vulcanization is different, this difference will The series of battery packs is expanded, and the single-state single body affects the entire set of batteries, and its life is significantly reduced. Removing from the battery on the production line, to the user's purchase of a car after using a lot of links, the interval is even longer than the month, during which period, due to the supplement of the battery, the self-discharged lead is a large amount of sulfate Stacking crystals, the new battery just bought, may be a battery that has been aging even.

Battery manufacturers are not completely eliminated in recycling batteries when performing warranty. After the battery is returned, the battery manufacturer re-charges and discharge test. It is often found that more than 60% of the unit cells do not match the returning condition.

The reason is that in the series of battery packs, individual batteries form a set of battery function to decrease in the battery function. Many battery manufacturers take the return battery to the return battery, replenish the sulfur, packaging, and re-supply to the user to increase the effective service life of the battery, reduce the scrap rate, reduce the loss of partial claims of battery manufacturers. Therefore, many dealers have felt that the battery supplied by the manufacturer is not as good as one generation.

Electric car battery, if used, ordinary batteries use for about 3 years, no big problem, contrary, use life to decrease. Therefore, consumers' daily maintenance of electric vehicle batteries is the key to determining electric vehicle battery life. How to extend electric car battery life About batteries and charging, we are divided into two categories: absolutely not allowed (prohibition) and best do not (recommended): 1.

Prohibition: 1. It is strictly forbidden to short the battery's positive and negative short circuit 2, prohibit frequent use When the undervoltage protection circuit is used to charge 3, it is forbidden to use electric vehicles 4 for unloading the charger, no idle time is too long (no more than three days, and the remaining electric power should be More than 40%), prohibiting loss of power storage 5, if it is found that there is no turn signal after 10 hours, should immediately stop charging, check if the temperature of the battery is hot. If the words should be repaired as soon as possible, they cannot be sent to the repair, and the total charge time should not exceed 8 hours, otherwise the battery will damage due to expansion deformation.

There are three reasons for non-turning lights (how many car owners, there is wood) 1: The charger parameters do not match, drift; two: line problems; 3: It is battery factor: lost water, there is a single short circuit in the battery, vulcanization severe. Four: There is a battery in the battery that is broken, leading to a full charge. Test method: 1.

Check if the charger is damaged, whether the charging parameters meet the requirements (some people use 48V chargers to charge the 36V battery pack), see if the voltage is high (14.8V / or more) or trickle conversion The current is low 2. Check if the charging circuit fuse is in good contact, the fuse holder has a burnt traces, check whether the connection plug is good, including the socket of the plug of the charger.

3, check if there is dry phenomenon inside the battery, that is, the battery is absent. The dry battery should add pure water or 1.05 g / cm3 dilute sulfuric acid to maintain the charge and discharge, and measure the monobic voltage to see if there is a single short circuit.

4, should also check if the polar is inversely reversible sulfate. If the vulcanization is severe, the internal resistance increases, and the charging will cause serious heat. 5, the non-reversible sulfate of the plate can determine the change of its end voltage by charging and discharging.

At the time of charging, the voltage of the battery has a rapid increase in the voltage, and some single-grid voltage is particularly high, and the voltage drop is particularly fast. In the above case, it can be determined that the battery has irreversible sulfate. If it is found that there is irreversible sulfate, a balanced charging method shall be repaired.

6. The maximum discharge current of the battery is prohibited by more than 150% of the rated capacity, that is, if it is a battery of 6-DZM-10 (often said 12ah battery), its maximum discharge current is 10×150% = 15A, if it is a 6-DZM-17 battery, its discharge current is 17×150% is about 25A, if the battery maximum discharge current of 20ah is 30A. This also limits the size of the controller limit value: 1.

It is best not to use electric vehicles to unplug the power of charger without electrically. It should also be noted that the turning light does not mean that the battery is full of electricity, almost 95% -99%, to continue to float 2-3 hours to full. 2, make timely charge, the idle time is preferably no more than 12 hours, and the corresponding floating time should be added.

3, less use, it is preferred to use 50% -80% and then charge, which is conducive to extending battery life. 4, after the battery is used, 2 months per room, preferably constant current charging once, the current size is C / 15, time 20 hours. 5, less pull, speed does not open too fast, reduce the discharge current of the battery.

6, slow acceleration, reduce the impact of the large current to the battery, controller and motor.