Because lithium-ion batteries for electric vehicles are not only repairable, but their performance can be restored to over 90% after repair.
18650 Lithium-ion Battery Repair Method
The theoretical lifespan of an 18650 lithium-ion battery is 1000 charge cycles. Due to its high capacity per unit density, it is mostly used in laptop batteries. In addition, because of its excellent stability during operation, the 18650 is widely used in various electronic fields: commonly used in high-end flashlights, portable power banks, wireless data transmitters, electrically heated clothing and shoes, portable instruments, portable lighting equipment, portable printers, industrial instruments, medical instruments, etc.
The principle behind the first method of repairing lithium-ion batteries: Over time, the metal surface of lithium-ion batteries will oxidize to a certain extent, leading to poor contact between the battery and the phone, and a shorter battery life. Using an eraser or other cleaning tools can remove the rust on the surface, improving the contact between the battery and the phone.
The principle behind the second method for repairing lithium-ion batteries: Low temperatures cause changes in the electrolyte inside an 18650 lithium-ion battery, promoting a chemical reaction in the recently frozen battery. The use of a lithium-ion battery is essentially a charge-discharge process. During this process, negative and positive charges collide with each other. Batteries become less durable because at normal room temperature, the kinetic energy inside electrons is relatively high, making the battery more active and prone to leakage. Placing a lithium-ion battery in a low-temperature environment significantly alters the microstructure of the lithium film and electrolyte on the battery surface, as well as their interfaces, leading to temporary inactivity and reduced leakage current. Therefore, after recharging, the phone's standby time will increase.
The principle behind the third method of repairing lithium-ion batteries: Deeply discharging the phone, which involves depleting its internal energy to achieve a deeper recharge, requires some unconventional methods. One method involves connecting the phone to a 1.5V light bulb; the energy inside the 18650 lithium-ion battery will be transferred to the light bulb until it is completely discharged.
1. After completely draining your 18650 lithium-ion battery, remove it and treat it with heat. The battery's lifespan will be greatly shortened when the temperature is unstable because the battery is empty and a significant portion of the lithium ions already have a memory effect. This method can release some of the memory effect. In winter, leave it outside for a while before bringing it back inside.
2. Another method is to remove the battery and leave it for about a week to slowly drain the power. Make sure to use a device to completely drain the battery first. Then fully charge it. I assume your charging time is currently very short. After fully charging, disconnect and recharge, repeating this several times. This method is definitely effective.
Repair methods for lithium-ion batteries in electric vehicles
1. If the lithium-ion battery pack of an electric vehicle is not working properly due to a damaged lithium-ion battery protection board, this problem can be easily solved by replacing the lithium-ion battery protection board to restore the power performance of the lithium-ion battery.
2. If the battery's performance is reduced due to sulfation, a lithium-ion battery repair device should be used to remove the sulfation.
3. If the lithium-ion battery pack of an electric vehicle is not working properly, it is because the series voltage difference of the lithium-ion battery pack has decreased, the discharge function of the entire lithium-ion battery pack or a single string of lithium-ion batteries has declined, and the voltage inconsistency has caused the lithium-ion battery function of the electric vehicle to decline and the performance to weaken. The common solution for users or repair service points is to replace the battery, which is relatively expensive. However, if you use the Shineng lithium-ion battery pack voltage balancing repair instrument, you can quickly solve the problem. The lithium-ion battery voltage balancing repair instrument is a comprehensive instrument that integrates functions such as discharging the entire battery pack, discharging a single string, and automatic voltage difference repair. It can quickly repair the lithium-ion battery and restore it to its optimal state.
Electric vehicle lithium-ion battery repair technology
Structurally, lithium-ion batteries for electric vehicles mainly consist of lithium cells, protection boards, and related auxiliary materials. Common lithium-ion battery faults include no output, inability to charge, incomplete charging, and low driving range. However, these problems are primarily caused by damage to the lithium-ion battery protection board and the lithium cells themselves. Technically, these common faults are entirely repairable.
1. Many electric vehicle lithium-ion batteries appear to be unusable, but this is actually due to a lack of understanding of them. The first step is to use a lithium-ion battery balancing and repair instrument to check the battery voltage, discharge, and voltage difference to identify which part or which battery is damaged, causing the entire battery pack to malfunction.
2. After identifying the root cause of the fault, a balancing repair device is used for targeted technical repair. Generally, the problem with lithium-ion batteries is mostly due to damage to the lithium-ion battery protection board or the lithium-ion battery cell. If the protection board is damaged, only the protection board needs to be replaced. If the cell is damaged, a lithium-ion battery balancing repair device is needed to repair the voltage difference of the lithium-ion battery so that each string of the battery pack can be fully charged and the stored power can be utilized to the maximum extent when discharging.
