Automobile battery failure precursor, automobile battery

The service life of a car battery is 3 years commonly when the car is maintained routinely, the union of automobile maintenance technician makes an inspection, tell the owner whether to need to change. But specific circumstance still depends on the driving habit of the car owner and decide, also have a new car less than a year, the battery is deficient of, this also has a very big concern with driving habit.

When encountering the following situations, the owners of small partners will pay attention to your car battery will need to be replaced oh ~

1. The car has difficulty starting

In the absence of other factors, if the car is suddenly difficult to start, it may be the battery is about to fail, but if it is winter may be the so-called cold-start difficulty.

2. The lights dimmed when the car was idling.

For example, when you are at a red light or stop temporarily, your car's headlights suddenly go dark. This is because the charging power of the engine drops when the engine is idle. If the battery can't be used at this time, and other devices in the car need to be powered at the same time, the headlights of the car will consume a large amount of power, and the power supply will be insufficient, resulting in dimming of the lights.

3. Battery failure light is on

When the battery failure light on, that is to remind the owner, should go to the repair shop for battery maintenance test.

4. The abnormal sound occurs during startup

Because the discharge capacity of the battery is weak, the startup machine will appear bad operation and squeak, this situation is particularly obvious at low temperatures, because the weather is cold, the battery activity will be reduced, and the weather will be improved or disappear after the warm, so many car owners do not care.

5. Battery observation hole

There is an observation hole on the maintainable battery, the lamp of the observation hole shows whether the battery works well, green is good, black needs to replace the battery, but some car owners will also reflect that the lamp is not reliable, is clearly green can not start the car, the observation hole as a simple reference.

6. The surface of the battery appears to bulge and leak

This situation is mainly to see whether there are a bulge and leakage of the battery if found such a situation, please timely replacement, if not replaced, there will be a safety risk, remember to be replaced.

In addition to the normal working voltage of 12 v battery, when start charging generator, voltage will rise to about 13 to 14 v, a lot of cars with voltage check function, focus on starting voltage change before and after, to identify the battery is good or bad, if the vehicle is not start was less than 12 v or start after less than 13 v, that we should consider the battery problem.

Let's Talk About The Lithium Ion Battery

Lithium-ion battery: It is a secondary battery (rechargeable battery), which mainly relies on the movement of lithium ions between the positive electrode and the negative electrode to work. In the process of charging and discharging, Li + intercalates and deintercalates between the two electrodes: when charging, Li + deintercalates from the positive electrode intercalates into the negative an electrode through the electrolyte and the negative electrode is in a lithium-rich state; the opposite is exact during discharge.

Lithium batteries are divided into lithium batteries and lithium-ion batteries. Mobile phones and laptops use lithium-ion batteries, which are commonly known as lithium batteries. The battery generally uses a material containing lithium as an electrode, which is a representative of modern high-performance batteries. The real lithium battery is rarely used in daily electronic products due to its great danger.

Lithium Iron Phosphate Battery Rack Manufacturer talked about lithium-ion batteries that use carbon materials as negative electrodes and lithium-containing compounds as positive electrodes. There is no metal lithium, only lithium ions. This is a lithium-ion battery. Lithium-ion battery refers to a general term for a battery that uses lithium-ion intercalation compound as a positive electrode material. The charging and discharging process of a lithium-ion battery is the process of intercalation and deintercalation of lithium ions. In the process of intercalation and deintercalation of lithium ions, it is accompanied by intercalation and deintercalation of electrons equivalent to lithium ions. In the process of charging and discharging, lithium ions are intercalated/deintercalated and intercalated / deintercalated between the positive and negative electrodes, which is called the "rocking chair battery".

Lithium-Ion Battery Cabinet

When the battery is charged, lithium ions are generated on the positive electrode of the battery, and the generated lithium ions move to the negative electrode through the electrolyte. The carbon used as the negative electrode has a layered structure, and it has many micropores. The lithium ions reaching the negative electrode are inserted into the micropores of the carbon layer. The more lithium ions inserted, the higher the charging capacity. Similarly, when the battery is discharged (that is, the process we use the battery), the lithium ions embedded in the carbon layer of the negative electrode are extracted and moved back to the positive electrode. The more lithium ions returned to the positive electrode, the higher the discharge capacity.

Generally, the charging current of a Lithium-Ion Battery Cabinet is set between 0.2C and 1C. The larger the current, the faster the charging and the greater the battery heat. Moreover, if the current is too large to charge, the capacity is not full, because the electrochemical reaction inside the battery takes time. Just like pouring beer, if it is poured too quickly, it will produce foam, but it will not be full.

For batteries, normal use is the process of discharging. Lithium battery discharge needs to pay attention to several points: the discharge current should not be too large, the excessive current will cause internal heating of the battery, and may cause permanent damage. On mobile phones, this is no problem, and you can ignore it. For example, Li-Ion Battery Pack for E-Rickshaw must not be over-discharged. The internal storage of electrical energy in lithium batteries is achieved by a reversible chemical change in electrochemistry. An excessive discharge will cause irreversible reactions to this chemical change. Therefore, lithium batteries are most afraid of over-discharge. Once the discharge voltage is lower than 2.7V, The battery may be scrapped. Fortunately, the protection circuit has been installed inside the battery of the mobile phone and the voltage has not been lowered to the extent of damaging the battery, the protection circuit will work and stop discharging.

Introduction To Three Methods For Using Lithium Batteries

Regarding lithium batteries, many people will say that this is too familiar! But do you know how to use lithium batteries correctly and introduce three methods? I do n’t know if we follow the Lithium Iron Phosphate Battery Rack Manufacturer to learn together!

The correct use of lithium batteries, the introduction of three methods-avoid excessive charging.

When the battery is short-circuited, its short-circuit current can reach hundreds of amperes. The light ones will cause fever, and even the batteries may explode. Therefore, special care should be taken when installing or using the battery, and check that there is no short circuit before putting it into use. At the same time, as mentioned earlier, improper charging will damage the battery, but excessive charging or discharging will also seriously damage the battery, which is extremely detrimental to the battery's electrical performance and cycle life. Overcharging will increase the water loss of the battery, accelerate the corrosion of the grid, soften the active material, and increase the probability of battery deformation. Do not place the battery in an overheated environment. And the battery can only be charged when the battery temperature returns to normal. Stop charging when overheating is found.

 Lithium Battery

The correct use of lithium batteries, the introduction of three major methods-correct maintenance.

Proper maintenance of electric Li-Ion Battery Pack for EV can make the battery life of electric vehicles longer and save more investment. It should be noted that the battery must be installed firmly to prevent the battery from being damaged by vibration during riding. Otherwise, when the car is driving on bumpy roads, the battery will shake or even fall off and be damaged. Secondly, it is necessary to always check whether the battery connection cable and the live connector are firm and whether the connection between the cable and the connector is good. Otherwise, it may cause electric sparks and severely cause a battery explosion.

The correct use method of the Li-Ion Battery Pack for EV of the electric rickshaw, three methods are introduced-pay attention to the charging environment.

In the high-temperature season, the battery has the problem of overcharging. The temperature of the battery should be reduced as much as possible to ensure good heat dissipation and prevent it from being charged after the hot sun. Exposure in the sun will increase the temperature of the battery and increase the activity of various active substances in the battery, affecting the service life of the battery. On the contrary, under low-temperature conditions, the battery has problems with poor charge acceptance and insufficient charge. In this case, it is necessary to increase the charging voltage and extend the charging time, and take heat preservation and anti-freezing measures, so as to help ensure sufficient charge. Extend the service life of the battery.

The correct use of lithium batteries, the introduction of the three major methods, do you know now? Do you know about these three methods? If you don't know, you can collect these methods. I suggest that you have a better lithium battery, and do n’t expose it!

Ternary Lithium Battery and Lithium Iron Phosphate Battery

Although the domestic subsidy policy for new energy vehicles has begun to decline, gradually increasing infrastructure and increasingly abundant optional models have also made consumers begin to accept the popularity of new energy vehicles. In addition to being an alternative solution for fuel-free vehicles that cannot be purchased in restricted purchase areas, new energy vehicles also have many unique advantages. Quiet driving environment, clean energy type and low vehicle cost, even the super torque output instantly when starting, can make many friends around you drive envy.

The battery, which is the source of power for electric vehicles, is naturally one of the most important parts. All uses of electric vehicles, including battery life, charge and discharge, are inextricably linked to battery performance. At present, domestic power batteries are mainly divided into two factions, which are divided into lithium iron phosphate pie and ternary material pie according to different cathode materials. Although both are secondary batteries, they can be repeatedly charged and discharged, but due to the differences in materials, the performance reflected in the use level is still quite different.

To figure out which battery is better, we should first have a simple understanding of the difference between the two. The following is the introduction of Lithium Iron Phosphate Battery Manufacturer.

Lithium Iron Phosphate Battery

The so-called Lithium Iron Phosphate Battery refers to a lithium ion battery using lithium iron phosphate as a positive electrode material. This type of battery is characterized by the absence of precious metal elements (such as cobalt, etc.). Because it does not contain precious metal materials, the raw material cost of lithium iron phosphate batteries can be compressed very low. In actual use, lithium iron phosphate batteries have the advantages of high temperature resistance, strong safety and stability, low price, and better cycle performance.

The ternary lithium battery refers to a lithium battery using lithium nickel cobalt manganate as a positive electrode material and graphite as a negative electrode material. Unlike lithium iron phosphate, the ternary lithium battery has a high voltage platform, which means that with the same volume or weight, the specific energy and specific power of the ternary lithium battery are greater. In addition, ternary lithium batteries also have great advantages in terms of high rate charging and low temperature resistance.

Technology is not good or bad or good or bad, it just applies to different products or environments. On the battery alone, there is no such thing as who is better and who is worse. Just applied to actual use scenarios, ternary lithium batteries are more suitable for current and future home electric vehicles than lithium iron phosphate batteries, and lithium iron phosphate batteries are more suitable for energy storage in public places such as train stations.

Do you know Lithium Battery Charging Technology?

We follow the Lithium Iron Phosphate Battery Rack Manufacturer to understand the theoretical basis of lithium battery charging technology: In 1972, the American scientist James proposed that the battery has the best charging curve during charging: I = I0e-αt, where: I0 is the initial charge of the battery Current; α is the charge acceptance rate; t is the charging time. The values of I0 and α are related to the battery type, structure and degree of old and new.

The current research on battery charging methods is mainly based on the best charging curve. As shown in Figure 1, if the charging current exceeds this optimal charging curve, it will not only increase the charging rate but also increase the outgassing of the battery; if it is less than this optimal charging curve, although it will not cause damage to the battery, it will prolong Charging time reduces charging efficiency.

How does a Multifunctional Battery System allow charging? There are many ways to charge lithium batteries, which can be divided into conventional charging and fast charging according to charging efficiency. Among them, the conventional charging methods include constant current charging, constant voltage charging, stage charging, and intermittent charging, while fast charging includes pulse charging and Reflex charging, and finally intelligent charging can be performed.

Lithium Iron Phosphate Battery Rack

1. Constant current charging According to the size of the charging current, constant current charging can be divided into fast charging, standard charging and trickle charging. During the entire charging process, the charging voltage of the power supply or the resistance value connected in series with the battery is generally adjusted to maintain the constant charging current of the battery. This method has the advantage of simple control and is suitable for charging a battery pack in which multiple batteries are connected in series. The disadvantage is that the lithium battery's acceptable charging capacity will gradually decrease as the charging progresses. Excessive charging current in the later stage of charging will cause air bubbles inside the battery and cause damage to the battery. Therefore, constant current charging is often used as a link in stage charging.

2. Constant voltage charging means that the charging voltage remains constant during the entire charging process, and the size of the charging current is automatically adjusted as the state of the battery changes. As charging progresses, the charging current gradually decreases. Compared with constant current charging, the charging process is closer to the optimal charging curve, with simple control and low cost. The disadvantage is that the charging time is longer, and the battery charging current is too large in the early stage of charging, which directly affects the life and quality of the lithium battery. Therefore, the constant voltage charging method is rarely used alone, only when the charging power supply voltage is low and the current is large.

3. Intermittent charging method Lithium battery intermittent charging method includes variable current intermittent charging method and variable voltage intermittent charging method. The variable current intermittent charging method was proposed by Professor Chen Tiemiao of Xiamen University. It is characterized by changing the constant current charging to a limited voltage variable current intermittent charging. The first stage (also the main stage) of the variable current intermittent charging method, first uses a larger current value to charge the battery, then enters the constant voltage charging stage, and charges the battery at a constant voltage until the charging current decreases to the lower limit, and the charging ends. In the main charging stage of the variable current intermittent charging method, under a condition of the limited charging voltage, an intermittent method in which the current is gradually reduced is used to increase the charging current, that is, to speed up the charging process and shorten the charging time. However, this charging mode circuit is relatively complicated and costly. Generally, it is only considered for high-power fast charging.

Do you know its charging technology? We are also a supplier of UPS Lithium-Ion Battery Systems, please contact us if you are interested.