Usually the battery pack is connected to the rectifier device for floating charge, and kept in a fully charged state, in case of emergency. The battery pack has been installed properly, completed the initial charge (Initial Charge) and recharged after the discharge test, it is added to the DC power supply system for use. However, after a period of use, lead-acid batteries are often prone to deterioration due to the shedding of active materials, corrosion of the positive electrode grid and sulfuration, and their capacity gradually decreases. In order to estimate the time that the battery pack can still supply power after the mains is interrupted, it is necessary to conduct a capacity (discharge) test regularly. The battery pack monitoring equipment (BNS-3000) provided by the company is a set of equipment that measures the battery current, terminal voltage, and the change of the internal resistance of the single battery under the state of battery discharge and charging, automatically obtains the test data and issues an alarm in time.

Main functions of BNS-3000 series:

1. The monitoring host is the main body of the monitoring equipment, which can monitor multiple battery packs at the same time.

2. The remaining capacity of the battery pack can be estimated and the quality of the battery can be evaluated through a short discharge of 5-10 minutes: it is convenient for the maintenance personnel of the computer room to understand the battery condition.

3. It has a variety of alarm functions: it can give an alarm in time and stop the discharge.

4. Monitor and record battery floating charge and charge and discharge conditions: Using BNS, you can save your troubles about test records. It will automatically aggregate the collected data into various test curves—characteristic comparison graph, total voltage curve, and each cell The voltage curve, voltage bar curve, cell internal resistance, memory data table, etc. are clear at a glance, and the test report is automatically generated and can be printed at any time.

5. The battery can be discharged for a long time by connecting BNS, and the actual capacity of each battery can be measured.

6. Simple operation, multiple battery packs can share a master control system.

Main features of BNS-3000 series:

1. Measurement function: It can measure and record the total voltage, total current, voltage of each cell, internal resistance and other conditions at any time (measurement time can be set).

2. It has the function of recording the period of floating charge: it can record the battery status during the floating charge, and make "equal charge" suggestions in a timely manner (external battery detector must be selected).

3. Abnormal warning: When the battery voltage, internal resistance and temperature are abnormal, an alarm will be issued.

4. The host can operate independently or build a platform with multiple stations.

5. The remaining capacity can be automatically calculated to provide the remaining capacity of the current battery pack.

6. The characteristic curve and characteristic comparison chart can be listed, and the quality of the battery can be judged.

7. Recording function: It can record the voltage, current, internal resistance and other information of the battery pack during the float charge and charge and discharge periods.

BNS-3000 series hardware and peripheral equipment:

1. Conduction band type current conduction type: This sensor can transmit the current data through the battery to the battery capacity monitor. (This sensor is assembled).

2. It has a loop to measure the voltage (0-16V) and internal resistance of a single battery.

3. It has a loop to measure the total voltage and total current of each battery pack.

4. Computer connection function: It can be connected to a computer, collect charging and discharging parameters, and perform battery performance evaluation and analysis. It can be connected to the power centralized monitoring network and has a remote monitoring function.

5. With LCD backlight display, real-time display of various voltage, current, temperature and other information on site.

6. Intelligent digital panel input makes setting query faster and easier to operate.

7. The signal cable is 0.3mm PVC wire.

9. Protection device: each circuit is in contact with gold-plated copper head and has an overcurrent protection device.

10. Memory device: The internal memory device of this machine adopts FLASH ROM design, and the memory storage capacity can reach 10 years.

BNS-3000 series patented technology

BNS-3000 series unique battery residual capacity analysis new technology, this patented technology has been applied for invention patents in the United States, China, and Taiwan. Using the BNS-3000 series to monitor the discharge of the battery pack online for 5 to 10 minutes, the worst cell in the battery pack will be found, and the actual capacity and remaining capacity of each cell in the battery pack will be automatically calculated.

Because the valve-regulated lead-acid battery is a sealed structure, it is not easy to carry out traditional maintenance work. It was once mistakenly called a maintenance-free battery. It is often known that the battery has a problem after the failure occurs. In order to avoid battery failure to constitute or constitute a major threat to the safety of power supply, it is very necessary and important to strengthen battery monitoring, daily maintenance testing and failure prediction. The mechanism of battery failure is very complicated, and there are many reasons for the early failure of the battery, including manufacturing defects, improper installation and operation, poor operating and environmental conditions, and so on. Battery plate corrosion, electrolyte loss, separator shrinkage and thermal runaway are the most important failure mechanisms. Various hidden troubles will affect the battery power supply performance. At present, the only accurate and effective method to predict battery failure is-battery capacity discharge test and battery internal resistance Monitoring and management.

For any faults in the battery, the BNS series battery internal resistance monitoring and management system can provide users with accurate forecasts. Through online real-time monitoring of battery voltage and internal resistance, it can effectively detect the status of each battery cell and effectively predict the power supply performance of each battery. . To effectively troubleshoot various hidden troubles, the important monitoring functions of the BNS-3000 series battery pack online intelligent monitoring system include:

A. Single floating charge voltage monitoring function: The single voltage monitoring function can effectively monitor the balance of each single battery voltage online. However, the relationship between the battery float voltage and current is affected by the internal oxygen recombination, and the single battery float voltage deviation of the faulty battery is also relatively large. Therefore, when the valve-regulated lead-acid battery fault detection is performed by the float voltage, the detection result exists Certain error. Even the "float voltage is normal but a serious failure occurs during discharge".

B. Single battery discharge voltage and charging voltage monitoring function: monitoring the voltage change of single battery during discharge and charging is an effective method to detect valve-regulated lead-acid battery failure. The speed at which the voltage of a single battery drops during discharge and the speed at which it rises during charging are all related to the "health" state of battery power supply performance. The discharge voltage of a faulty battery drops faster than a normal battery, and the charging voltage rises faster than a normal battery. Based on this, a faulty battery can be detected. The result of this method is accurate, but it must be combined with the discharge test.

C. Online monitoring of internal resistance of single battery: Predicting failure by monitoring the internal resistance of single battery is an accurate and reliable method to replace frequent discharge tests. It should be noted that the internal resistance of a single battery is closely related to its life and power supply capability, so it can be used to detect the power supply performance of the battery when it is discharged; the relationship between the internal resistance of a single battery and its capacity is not linear, so the internal resistance of a single battery Resistance cannot be used to directly indicate the accurate capacity of the battery, but it can be used as an important indicator of battery performance. A large number of experimental results have shown that if the internal resistance of a single battery increases beyond a certain empirical data, the future life of the battery must be problematic, or even the expected capacity, which can accurately and effectively detect the battery with potential failures.

D. Other monitoring and warning functions: real-time online monitoring and recording of battery charging and discharging operation status, checking and confirming the working status of the battery pack. In order to prevent the harmful conditions that will affect the normal operation of the battery in the future, the battery will be alerted and recorded in time when abnormal operating conditions (such as floating charge under high pressure, deep discharge, and excessively high or low temperature) occur.

E. It has software data analysis and management functions: all charging records, discharge records, abnormal events and other historical data archiving and management between the battery pack from installation to scrapping, can automatically calculate the remaining capacity of each single battery, through the characteristic curve, And characteristic comparison chart, trend management of battery performance.