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Online monitoring scheme for computer room batteries
Article Introduction:
Product details
The XX project requires online monitoring of battery packs, including cell voltage, cell internal resistance, cell internal temperature, pack voltage, ambient temperature, and charging and discharging current. Monitoring software should be configured to remotely read and display data.Frequent incidents of battery explosions and fires in data centers have resulted in significant losses for property owners. The batteries in a typical computer room explode and catch fire due to improper management after one of the batteries cracked, causing a rapid deterioration of the battery. Due to the fact that batteries are used in series and parallel, as long as one section catches fire and burns, the entire piece will instantly spread, leading to a major fire accident.
1Common faults of computer room batteries
1. Battery fire and explosion in the computer room
2. Main faults and reasons for failure of batteries
Explanation: Almost all battery faults can be detected by increasing the internal resistance of individual cells.
twoOnline monitoring of computer room batteriesThe important role of
With the development of technology, a new detection method has emerged, and the online monitoring of batteries has begun to be applied to data center battery monitoring. It has been proven to be a very necessary and effective method through a large amount of time.
Battery online monitoringMain function:
To prevent accidents, online monitoring of batteries can provide early warning and controllable management.
24-hour online monitoring, accurate measurement data, real-time monitoring of battery condition, greatly reducing manual maintenance.
3 can achieve networked and automated management, and realize remote monitoring.
4. Accumulate operational data of different brands of batteries, and achieve future product selection through big data analysis.
5. Save a lot of manpower and material resources.
The main analysis functions of the battery monitoring system are:
1. Automatically analyze the remaining capacity of the battery
Analyze whether the battery has failed or needs to be activated
Analyze the individual voltage during float charging and identify the battery that needs to be charged
Analyze the individual cell voltage during float charging and identify the overcharged battery
Analyze the voltage of 5 floating charging groups to determine whether the voltage of the charging machine is too high or too low
According to project requirements, this plan adopts a technical solution: the topology of the solution is shown in the following figure.
The management of battery packs mainly adopts regular maintenance. Generally, the voltage and internal resistance of the battery are measured manually on a regular basis, and the battery pack is checked and discharged once a year or several years.
This maintenance method mainly has the following drawbacks:
·The heavy maintenance workload has resulted in maintenance personnel being overwhelmed
·Unable to instantly grasp the real data of battery pack operation and unable to conduct systematic analysis of the data
·High maintenance risk
Si Bi Demachine roomBattery online monitoring systemA system with advanced technology, complete functions, complete configuration, stability and reliability, and strong anti-interference ability. The main functions of the system are: real-time monitoring of total voltage, total current, and individual battery voltageInternal resistance of individual battery、Individual battery temperatureWhen any parameter exceeds the threshold, such as environmental temperature, an automatic alarm will be triggered, and a warning will be given for batteries with degraded performance.
Each battery is equipped with an H3G-TA module to monitor the voltage, internal resistance, and temperature of the battery. The TA modules are connected to each other through a communication bus and then connected to the convergence module. The convergence module scans and reads the data monitored by each TA module, analyzes, processes, saves, and displays it, and uploads it to the monitoring center through a communication port.
（2）Hardware implemented functions
1. Online monitoring of the voltage, pole temperature, and internal resistance of each battery cell; Battery pack voltage
Charge and discharge current, ambient temperature; Online thermal runaway monitoring.
2. It can automatically measure the internal resistance of the battery regularly without manual intervention. Automatically obtain the reference internal resistance value of each battery cell
Curing is used to determine the quality of the battery by comparing the horizontal and vertical internal resistance through automatic analysis.
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