First charging method and assembly method of lithium iron phosphate battery for electric vehicle. Lithium battery is the first choice for electric vehicle battery upgrading. After the large-scale application of lithium battery to mobile phones and other portable communication tools, its green and environmental protection quality has been recognized. Before charging the lithium iron phosphate battery for the first time, the power consumption of electric vehicles should be used up, but not exhausted. When you buy an electric car, the power will not be too full, but it will not be too little, unless it is an old battery or a low-quality battery.
First charging method of lithium phosphate battery for electric vehicle
1. The lithium iron phosphate battery pack has some power surplus before leaving the factory. After the electric vehicle is sold, it can also ride for a short distance. After the first ride, the battery must be charged for the first time. It is recommended that the first charge should take a little longer (8-12 hours).
2. After the first charge, although it is not the first charge, the second charge is also the new car charge. At this time, you can make the battery car run out of power, and then charge it for a long time. This charge can last for 8-9 or even 10 hours, so as to make the battery car carry out a complete cycle of chemical reaction.
3. When the adjustable lifepo4 charger is charged for the first time, the lithium iron phosphate battery charger may generate heat quickly and high. Therefore, especially when charging in summer, the charger should not be placed on the object easy to heat and burn, and it is best not to put it on the seat of the battery car to prevent fire.
4. Before the first charge, the power consumption of the electric vehicle shall be used up, but it shall not be used up. When you buy an electric car, the power will not be too full, but it will not be too little, unless it is an old battery or a low-quality battery. When you use it, you should estimate the approximate running distance according to the merchant's estimation, so as not to have no electricity or use up too much electricity. When the battery car power display has reached the last grid, you should consider not riding and be ready to charge.
5. For the first time, the lithium iron phosphate battery of electric vehicle should be charged during the day. As we all know, when charging for the first time, the battery should be full, but full does not mean overcharge. Charging during the day is easy to control the charging time, so as not to make the battery overcharge and discharge for the first time, which is easier to make the first chemical reaction in the battery normal.
6. When using the lithium iron phosphate battery for electric vehicles, you should pay attention not to overcharge and discharge. There is really no other explanation. The lithium battery is activated before leaving the factory. You don't need the bullshit charging method for the first 12 hours.
7. In order to ensure the charging safety of lithium iron phosphate battery pack and ensure the service life of lithium battery pack, lithium battery pack can only use the special charger for lithium battery. If the charger is lost or damaged, please find the corresponding dealer to buy it. Lead acid chargers or other forms of chargers shall not be used for charging.
8. New lithium iron phosphate batteries generally have a certain amount of power after they arrive and can be used immediately, rather than having to be charged before use. From the perspective of theory and practice, the effect of "recharging after use" or "recharging after reuse" for the first charging of lithium batteries is exactly the same.
Assembly method of lithium iron phosphate battery for electric vehicle
The complete set of assembly equipment for lithium battery of electric vehicle includes four parts: raw material testing equipment, finished product manufacturing equipment, finished product testing equipment and finished product packaging equipment. Lithium battery assembly, production and processing technology is very strict and complex. The production processes of different types of lithium batteries are different, and there are countless production equipment. If you do lithium battery assembly, there are not many equipment, and the processing equipment of about 10000 yuan can be small-scale assembly and production.
Step 1: ingredients
High vacuum fully automatic stirring of materials for 10 hours to evenly disperse the materials required for the lithium battery pack of electric vehicle, so as to improve the consistency and comprehensive performance of the battery.
Step 2: coating
Automatic feeding system, automatic tool adjustment system and on-line thickness measurement system are adopted to evenly coat the positive and negative electrodes.
Step 3: roll alignment
After the positive and negative electrode plates are coated, the positive and negative materials are relatively loose. It is necessary to give the electrode plates a certain pressure to compact the positive and negative materials to a certain range.
Step 4: separate articles
According to the model of lithium battery pack, the positive and negative plates need to be cut into the required width. For example, 18650 lithium battery, the width of the pole piece is within 56-58mm.
Step 5: production and winding
The full-automatic film making machine is used to weld the positive and negative lugs to the positive and negative plates. The full-automatic winding machine is used to wind the positive and negative plates and the diaphragm into a cylindrical shape.
Step 6: point bottom rolling groove and vacuum drying
Put the coil core into the steel shell, automatically weld the negative lug and roll the groove automatically. In addition, after high vacuum and high temperature baking, dry a small amount of water, so that the performance of electric vehicle lithium battery pack can be guaranteed.
Step 7: formation and volume separation
The lithium battery needs to be charged and discharged before shipment. The battery is in a point state before leaving the factory.
Step 8: assemble the lithium battery
The full-automatic welding machine is used to weld multiple lithium batteries together with connecting pieces, and then install the circuit board for aging test and shipment inspection.
The above is the first charging method and assembly method of lithium iron phosphate battery for electric vehicles. Lithium batteries are more and more used in electric vehicles, new energy vehicles, power vehicles and other industries. The correct charging method of lithium battery is more conducive to its service life.
