What Are the Maintenance Techniques for New Energy Vehicle Batteries?
3 Answers
New energy vehicle battery maintenance techniques are as follows: Imbalance: The repair method involves identifying batteries with consistent capacity, voltage, self-discharge, and internal resistance for combined use. Sulfation: The repair method uses a sulfation repair device, which operates based on fuzzy digital control theory. By assessing the battery's condition, it continuously emits positive and negative variable-frequency microparticle waves during charging and discharging, removing hardened lead sulfate crystals within 10 to 20 hours. Plate softening: The repair method involves discharging the battery to 10.5V, followed by deep discharge using a light bulb for 1-5 hours, and then using an activation device for repair. Short circuit: For water-based batteries, the repair method involves drilling to remove short-circuited lead powder. For electric vehicle batteries, a rapid short circuit between the positive and negative terminals can burn out the short-circuited area. New energy vehicle batteries can be divided into two main categories: storage batteries and fuel cells. Storage batteries are suitable for pure new energy vehicles and can be classified into lead-acid batteries, nickel-based batteries (nickel-metal hydride and nickel-zinc batteries), sodium-based batteries (sodium-sulfur and sodium-nickel chloride batteries), secondary lithium batteries, and air batteries. Fuel cells are specifically for fuel cell new energy vehicles and can be categorized into alkaline fuel cells (AFC), phosphoric acid fuel cells (PAFC), molten carbonate fuel cells (MCFC), solid oxide fuel cells (SOFC), proton exchange membrane fuel cells (PEMFC), and direct methanol fuel cells (DMFC). New energy battery maintenance: Avoid storing with low charge, conduct regular inspections, prevent high-current discharge, accurately control charging time, avoid exposure to sunlight, and prevent plug overheating.
In the field of new energy vehicle battery repair, I've encountered many cases. Repair techniques include first using diagnostic equipment to read battery data and identify voltage imbalances or problematic individual modules. Then, safely disconnect the high-voltage power supply, wear protective gear, and proceed to replace faulty battery cells or entire modules. The thermal management system is crucial—it's necessary to inspect and clean the coolant lines to prevent blockages that could lead to overheating or explosions. Software updates or calibration for the Battery Management System (BMS) are essential to optimize charging and discharging efficiency. Also, check the charging port contacts for oxidation, and clean or replace them to prevent charging failures. Don't forget the daily advice: regular comprehensive inspections can prevent issues and extend battery life by over 5 years, saving significant costs.
As a new energy vehicle owner, I once experienced a battery issue that nearly left me stranded. The repair process is straightforward: take it to a 4S dealership where they use professional diagnostic tools to identify the faulty battery cell and replace it locally, which is much cheaper than replacing the entire battery pack. They also maintain the cooling system, such as checking the fans and coolant leaks to prevent battery damage from overheating. On the software side, updating the BMS program and resetting error codes are routine procedures. I've learned that simple habits like avoiding parking in direct sunlight and not overcharging can reduce the likelihood of repairs. For cost control, early diagnosis and timely repairs save money and provide peace of mind.
