What are the repair methods and common faults of electric vehicle lithium batter
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2022/06/17 16:53:27
Electric vehicle lithium ion battery repair method
1. Rearrange groups: After the whole group of batteries is damaged, we often conduct charge and discharge tests on the lithium-ion batteries of electric vehicles. During the inspection, we often find that 50% of the batteries in a group are not damaged. The reason is that in the serial battery pack, the function of the whole battery group declines when individual batteries fall behind, so that the function of the whole battery group declines.
2. Water replenishment: Water replenishment for the lithium-ion batteries of electric vehicles that have been used for about 4 months can prolong the service life of the batteries by more than 3 months on average. It should be noted that after each water refill, the battery is in an overcharge state to turn the battery from quasi-lean liquid to lean liquid, and this overcharge is good for improving the capacity of the battery.
3. Eliminate vulcanization: the battery repair equipment is used to eliminate vulcanization of the battery.
4. Particle generator: The particle generator is connected to the battery in parallel to repair the battery. This method is better for repairing lithium-ion batteries of electric vehicles. However, due to the thorough repair, if there is no discharge, the possibility of battery vulcanization is often completely eliminated for lithium-ion batteries of electric vehicles in continuous use.
5. Comprehensive repair method for lithium-ion batteries of electric vehicles: The lithium-ion batteries of electric vehicles shall be inspected regularly, sulfur removal and water replenishment shall be carried out in time, and a single battery shall be charged and rearranged. Battery instructions, if it is free of maintenance, generally do not add water. If you want to add water, first detect the electrolyte density of the electric vehicle battery itself, and select water with the corresponding concentration or no concentration to supplement according to different situations, so as to increase the battery capacity or extend the service life.
What are the common faults of lithium-ion batteries in electric vehicles?
Electric car no display, battery no output, battery can not charge, etc.;
● Lithium ion battery charger failure caused by not charging, charging dissatisfaction, charger lamp, charging time becomes shorter or longer;
● Lithium ion battery voltage is normal, cycling distance is very short power off, stop for a while and then resume riding, cycle appears good and bad situation;
● Lithium ion battery protection plate itself damage caused by the lithium ion battery can not work properly, the battery protection plate does not work caused by part of the battery cell damage.
There are five major failures of lithium-ion batteries in electric cars
1. Overcharging will cause battery bulge;
2. Overdischarge will damage the battery life, causing irreversible damage;
3. Excessive current during discharge will also cause damage to the battery, which is also irreversible;
4. The electric car lithium-ion battery are made by more than batteries through a combination of series and parallel, high consistency requirements for batteries, despite the manufacturer do pair of batteries, but lithium ion battery during long time use will appear because of the error of the battery every string of battery voltage, cause to the output of energy for the whole battery pack will decline, Then there will be a sudden power cut in the use, stroke reduction, charge dissatisfaction, can not put out such a problem.
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