4-192S battery management system for lithium ion batteries

Performance and Parameters

1. Real-time monitoring of 4-192 series single unit voltage. The accumulated total voltage is within 1000V. Single module management supports a maximum of 12 strings and a minimum of 4 strings (since the power supply for module operation is drawn from the battery, the total voltage of a single module must not be less than 9V. Any excess unused channels must be connected to the positive pole of the highest battery in a single module). The total input voltage of a single module shall not exceed 75V, the monitoring voltage range of a single section shall be 0-5V, and the total input voltage of the host shall not exceed 60V.

2. Real-time monitoring of total voltage, charging and discharging current, power, temperature, and statistics of actual charging and discharging ampere hours, displayed with a graphical progress bar. Each module is equipped with one temperature detection channel.

3. The system has functions such as single overcharge protection, single over-discharge protection, overcurrent protection, high-temperature protection, low-temperature protection, differential pressure protection, and battery failure protection.

4. The host is equipped with various running lights to indicate the system running status without using the screen.

5. 3.5-inch IPS color screen display with an ultra-wide viewing angle, providing clear working status at a glance.

6. Supports three ranges of Hall current sensors, with a default standard range of up to 400A. It has a manual calibration function for Hall current sensors, a self-calibration function for the collection module, and a total measurement error of 1.2mV for individual voltage collection.

7. There are two types of relay schemes: same port and split port, with different control software. The interface type needs to be determined before procurement.

8. The acquisition module adopts a two-way cascading structure, each of which can connect 1 to 8 acquisition modules. The host automatically recognizes the number of acquisition modules, and the two-way acquisition modules support a total of 16. The acquisition module is connected with two-core CAT5 twisted pairs, with a length of up to 40 meters.

9. The power outage module of the host will enter a sleep state while releasing all relays. The power consumption of the module is only 4μA, which will not cause the loss of battery power.

10. The module has an automatic battery balancing function, which balances the voltage drop of the battery and stops when the drop is 0.001V. The balanced discharge current is 200mA.

11. The system is designed with full isolation, and the collection modules are isolated from the host. All interfaces can be hot-swapped, and temperature sensors, display screens, and Bluetooth external devices that are not used can be omitted.

12. Actively dissipate heat, automatically starting the fan when the temperature reaches the set value, and automatically starting PTC heating when the temperature drops below the set value.

13. Supports RS232 TTL communication and CAN communication, with an Android mobile app that monitors and controls the status and parameter settings of the host through Bluetooth. The app has the ability to query protection history records and can query the last protection record.

14. The same port connection method automatically controls the charging and discharging relay. In the split port connection method, the charging and discharging relay is automatically restored according to the charging and discharging recovery set value. When there is overcurrent protection, over-temperature protection, battery string error, low-temperature protection, and differential pressure protection, which are related to safety, the charging and discharging relay is closed simultaneously. At this time, the channel must be manually opened.

System performance parameters

Port Description