Safety practice of valve-regulated sealed lead-acid battery

In the event of a power failure, the valve-regulated sealed lead-acid battery acts as an emergency power supply. In the data room, more than 90% of the batteries rarely encounter a power failure during the life cycle, but the battery must be in a normal state at all times, otherwise the battery cannot be discharged during the power failure, and the consequences will be very serious. Therefore, keeping the battery in a healthy and usable state can guarantee the power supply safety of the data center.

The failure causes of VRLA batteries can be divided into three types: the first is quality problems, such as liquid leakage and micro-short circuit. Generally speaking, the grounding system of the UPS should comply with the regulations of the low-voltage grounding system of the IEC60346 standard. This means that for most UPS, the center line of the battery pack and the battery rack are grounded. Therefore, when a battery in the battery pack leaks, and the leaked electrolyte flows to the battery rack, a short circuit will be formed between the battery packs, causing an accident. If there is a micro-short-circuit battery in the battery pack, when the battery is discharged, the voltage of the micro-short-circuit battery will quickly drop, resulting in insufficient backup time.