Analysis of battery online monitoring and automatic maintenance system

Background of battery online monitoring and automatic maintenance system: 1. All occasions with high power supply reliability requirements are equipped with batteries. 2. Battery safety accidents frequently occur. A large number of batteries are scrapped prematurely, which constitutes a huge waste. 4. Battery detection and protection work is heavy and full of risks. 5. Severe lack of battery test protection. Backward battery damage: 1. The backward battery has large internal resistance, small capacity, and high heat in the later stage of charging, which is likely to cause heat loss and burst fire. 2. When the power supply is interrupted, the voltage drops rapidly when the battery is discharged later, causing the entire battery to exit operation early, resulting in power loss. 3. Individual backward batteries drag down the entire battery pack, because the existence of backward batteries will cause the consistency of the battery pack to degrade, accelerate the degradation of the entire battery pack, and shorten the lifespan. 4. Simple sound insulation and liquid leakage constitute a grounding short circuit, which can simply cause fire and electric shock. The safe operation of the battery is of great significance: the battery is the core of the power supply system in the computer room and the last line of defense for safety. The bearing is very important. Once a battery accident occurs, it will cause important data loss and communication interruption. In the substation, all protective equipment, communication equipment, active equipment, emergency lighting and other equipment are full of DC power supply. Under normal operation, the battery is only used as a backup state and runs in parallel with the charger. The battery is the most reliable in the substation. Power supply equipment. If there is no DC power supply, the substation will be paralyzed, which may lead to serious consequences of the disintegration of the power grid. Battery safety is important in three aspects: 1. Fire and explosion caused by thermal runaway or short circuit 1. Power loss due to busbar cracking or insufficient capacity 2. Electric shock caused by grounding or short circuit. Identification and treatment of discarded batteries: backward Battery identification: 1. When floating charging or open circuit, the backward battery can be identified through internal resistance detection. 2. By monitoring the negative temperature change during the charging process, backward batteries can be identified. 3. The discharge can be monitored by the voltage drop of a single battery to identify the lagging battery. Backward battery treatment: 1. A single cycle of high-current charge and discharge is activated. This method has a certain effect on vulcanized batteries, but it takes a lot of time. 2 The method of injecting distilled water or electrolyte has a great ability to improve the effect, but the internal resistance of the corrected battery does not decrease, the sealing function is destroyed, and the loss will accelerate the curing speed and the water capacity will quickly rot, and simply Lead to safety issues. 3. Small current pulses are activated online. These measures have a certain impact on the treatment of the battery, but the activation process takes a long time and requires a long time to operate online. It is worth noting that this method is necessary for online equipment to choose independent power supply. The passivation of the measurement will cause the battery, not only the incorrect battery will also accelerate the degradation of the battery. 4. Replace the outdated battery, but it must be the same single type, the same brand type, and the consistency of internal resistance should not exceed 15%. Battery capacity failure mode: The battery pack consists of many single battery series. The current choice is the charging and discharging of the entire system. Due to the battery capacity, the difference between the internal resistance is likely to cause the voltage imbalance of each single cell and float in the whole system. In the case of a long time, some batteries are slowly under-vulcanized for a long time, the battery is overcharged and water is lost for a long time. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the advantages of soft pack lithium batteries compared to other lithium batteries?