Electric unicycle battery maintenance skills and maintenance

Battery is the top priority among the unicycle, it is understood that 70% of the battery is not natural loss, but artificial, as the electric unicycle lovers should learn how to maintain the battery, prevent premature loss of the battery, so the following small make up for you to introduce several maintenance electric unicycle skills.

How to maintain the battery of electric unicycle

Charge after each use

For most people may not be willing to accept, because the trouble is always charging, in fact, this can ensure that the battery does not appear excessive discharge, can protect the battery in the active material from excessive damage.

After five to 15 cycles, perform a complete discharge

People using trick one also worry about their battery capacity, and for this, the solution is simple, namely to do a complete discharge charge. Of course, not frequent, frequent is not good for the battery, as long as in the use of five to fifteen times, after a complete discharge of the battery, and then full, a long time, the user will find that the capacity of the battery is slowly increasing.

3. Once the battery is used up, it cannot be used again

Many users have encountered this situation, the battery forgot to charge, the result of the use of the process completely out of power, so on the way will take the method of slowly return to use, for this, it is recommended not to often use this way, because it has a great impact on the life of the battery. A typical battery has a life of one to two years, but if it is used regularly, it may last up to a year.

In winter, it is best to recharge after 30 minutes

In winter, when the temperature is low, the indoor and outdoor temperature difference is large, which will damage the insulation of the battery surface. Therefore, to charge the battery, it is recommended to wait for 30 minutes after entering the room.

Electric unicycle battery maintenance skills

1. Shall I discharge the battery before charging?

A: lead-acid battery is different from other secondary batteries, it has no memory effect, so, no matter what kind of charged battery state, can be directly charged, without discharge.

2. Why should the battery be recharged before the first use?

Answer: the battery arrives from factory use, want to pass 1-2 months commonly, longer even time, the battery is in because of the spontaneous reaction such as the self-discharge inside battery during depositing, consumed a part of electric quantity, do not reach rated capacity value, before using for the first time so, had better undertake compensatory charge, lest the customer is mistake for capacity inadequacy.

3. How to deal with the battery of an electric vehicle if it needs to be stored for a long time?

Answer: first of all, the battery should be fully stored, and should be charged at least once a month, to prevent power loss, can effectively prevent the formation of crystal technology caused by irreversible salinization and dendrite short circuit.

4. What's the harm of overcharge and undercharge?

Answer: after charging the battery charging current is greater than the current for the battery, the part is more charge, charging mainly produce electrolytic water side effects, because the battery positive electrode produce oxygen to the cathode oxygen compound reaction, heat will happen, so charging amount actually converted into heat make a battery temperature, if not controlled, can cause a lot of water loss, serious cause collapse "thermal runaway" capacity, and even fault deformation, etc. Under charge is generally said to be undercharged often in the case of insufficient charge, the extreme will gradually form a thick hard lead sulfate, it is almost insoluble, that is, the so-called "irreversible sulfuric acid", the use of ordinary methods can not be charged into the electricity, so the capacity will be a time a rapid decay.

5, what is the harm of over discharge to the battery?

Battery cathode active material in the process of discharge, the cathode active material are gradually into the resistance being very high PBSO4, and consumption of sulfuric acid in the electrolyte, internal resistance increases gradually, so after discharge, especially in the large current discharge will send a lot of calories, and small amounts of sulfuric acid battery over discharge reduced sulphuric acid concentration is very low, when the PBSO4 solubility increased dramatically, so easy on the plate form a thick hard PBSO4 crystal, namely "irreversible sulfate is greatly weakened battery charging accept ability, especially large.

6. Is it better to charge the battery frequently or to charge it after discharging?

Answer: because discharge is shallower, its cycle times will increase greatly. Therefore, according to this theory, frequent charging is beneficial to the cycle life. However, for a large number of chargers in circulation in the market, due to the influence of price factors and technical level, the chargers have defects such as high failure rate, poor reliability and low accuracy. Therefore, sometimes charging often affects the battery life. Will vent rechargeable batteries, charging times although less, but because there will always be differences between monomer battery when discharge may cause some single discharge, discharge the battery to accept ability will be greatly reduced, cause the failure of under charge, also it finished by electricity recharging, charging him load time is long, easy to damage the charger. Therefore, it is reasonable to charge the battery when it emits 50-70% of the power, which is beneficial to the use of the battery.

7. Does high battery voltage mean high capacity?

A: the battery voltage and capacity are two concepts, voltage and electrode materials and electrolyte concentration, the capacity of the battery is the current active substances produced by electrochemical reaction and released, it has to do with the amount of active material, reaction conditions and the utilization, connections and so on, so the voltage high no capacity is high, low voltage does not necessarily capacity is low, but in the case of load cell voltage is proportional to the battery capacity.

8. Under what circumstances should ev batteries be maintained and charged? What are the charging parameters?

Answer: the battery of the electric balance vehicle needs to be maintained and charged under one of the following circumstances: (1) the battery capacity attenuation slows down too fast; (2) backward batteries appear; (3) refill the battery after it loses liquid; (4) after the battery is placed for a long time; (5) after serious overdischarge of the battery; (6) the battery works in low temperature environment for a long time; (7) unreasonable charging parameters and long-term undercharging; How to determine the charging parameters for maintenance charge; Constant voltage current limiting charging or multi-stage constant current charging are generally adopted. The parameters before and during charging are basically the same as those of the car charger, but the highest charging voltage is raised to a higher level in the later charging stage. Namely, WD charging is adopted for deep charging to repair outdated batteries. Maintenance charging is also called balanced charging.

9. What is the effect of temperature on battery performance?

A: when the battery is charged or discharged, an electrochemical reaction takes place on the battery electrode. The higher the temperature, the higher the activity of each active substance of the battery, the lower the viscosity of the electrolyte and the lower the resistance. Therefore, the electrochemical reaction is easy to be carried out, while not easy to be carried out otherwise. The lower the temperature of discharge, the lower the discharge capacity, in a particularly low temperature, the discharge capacity will drop significantly, high temperature is the opposite; When charging, the lower the temperature is, the worse the charging acceptability is, and the higher the charging voltage is required, so as to provide sufficient power. On the contrary, the higher the temperature is, the better the charging acceptability is, and it is easy to cause overcharging. Therefore, it is required to reduce the charging voltage, so as not to cause overcharging. The change of this temperature directly affects the charging and discharging performance of the battery.

10. What is the relationship between the initial capacity of the battery and its service life?

A: battery capacity is affected by active material and utilization. Electric moped battery size is certain, the quality of the plate has been limited to a certain extent, only to improve the utilization rate of active substances, to improve the capacity. To increase the battery capacity, you must increase the rate of hole and raise the proportion of PbO2 content, sulfuric acid, but these measures would accelerate the softening of positive plate, cause the battery life of acceleration attenuation, in the process of charging and discharging active substances can produce expansion and contraction (especially positive plate), the deeper the depth of discharge, the active material expansion shrinkage, the greater the speed more active material softening. Therefore, the high initial capacity directly affects the charge and discharge times of the battery. Of course, to meet the use, the initial capacity should not be too small, need a compromise choice to meet the needs, both to ensure that the life extension, and ensure that the capacity to meet the use requirements.

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