The meaning and function of the host computer, the slave computer and the BM
Overview:
The host computer, the slave computer and the BMS are interconnected in the lithium battery management system (BMS) to form a complete management, monitoring and control architecture. They ensure the safe, reliable and efficient operation of the battery system through their respective role division and collaboration.
Basic relationship:
1. Host computer
The host computer is the central control and management device of the system, which is mainly responsible for the monitoring, analysis and issuance of operation instructions of the overall data. The host computer communicates with the BMS in a two-way manner through a standard communication protocol (such as CAN bus, RS485, UART or Ethernet) to obtain the operating data of the battery pack, including key parameters such as voltage, current, temperature, SOC (state of charge), SOH (state of health), etc. The host computer analyzes and stores these data, and issues operation instructions according to the battery status, such as starting battery balancing, adjusting charging strategy, executing protection actions, etc. In addition, the host computer can also monitor multiple BMS modules to achieve remote monitoring, centralized control and maintenance management.
2. Lower computer The lower computer is responsible for interacting with sensors or actuators, collecting sensor data or performing specific control tasks. The lower computer passes the data to the BMS to perform tasks related to battery management. In some systems, the lower computer is also responsible for specific execution tasks, such as controlling the temperature adjustment device of the battery cell. The hardware platform of the lower computer usually includes a PXI chassis, a real-time processor and an I/O board, which is responsible for sequence execution and device call.
3. BMS
BMS is a device that directly manages the battery module and is responsible for the battery status monitoring, protection and control functions. BMS communicates with the host computer to report the battery status and receive instructions, and communicates with the lower computer to obtain the underlying sensor data or control specific actuators. BMS obtains the underlying sensor data, such as the voltage, current, temperature and other information of each battery cell, through the lower computer, and sends the key data to the host computer after local processing. BMS also has a variety of functions, including data collection, balancing management, protection functions and fault diagnosis, charging management, thermal management and alarm reminders.
Interaction between host computer, BMS and slave computer
1. Data flow:
Slave computer to BMS: The slave computer collects battery data and transmits it to BMS for centralized processing and management.
BMS to host computer: The processed data of BMS is uploaded to the host computer, which further analyzes and stores it, generates reports, predicts battery life, etc.
2. Instruction flow:
Host computer to BMS: The host computer sends operation instructions to BMS according to the operating status of the battery or the operator's instructions, such as adjusting the charging and discharging strategy, performing balancing or protection actions.
BMS to slave computer: BMS sends the instructions of the host computer to the slave computer to perform specific operation tasks, such as starting or stopping the battery protection device, adjusting temperature control, etc.
Communication and Protocol
1. Communication protocol between host computer and BMS:
Common communication protocols include CAN bus, RS485, Ethernet, UART, etc. These protocols provide reliable data transmission channels to ensure that data and instructions can be exchanged between the host computer and BMS in real time.
2. Communication protocol between BMS and lower computer:
The communication between the lower computer and BMS may use internal communication protocols such as I2C and SPI for fast exchange of sensor data and control commands. These protocols are usually used in short-distance, real-time communication scenarios.
Hierarchy of system architecture
Hierarchical architecture: The host computer, BMS and lower computer form a hierarchical architecture: The host computer is at the highest level and is responsible for global monitoring, data processing and system control.
1. As the middle layer, BMS not only performs specific battery management tasks, but also reports data to the upper computer and executes the instructions of the upper computer.
2. The lower computer is at the bottom layer, interacts directly with sensors and actuators, and provides local data acquisition and control functions.
The meaning and function of the host computer, the slave computer and the BM
Overview:
The host computer, the slave computer and the BMS are interconnected in the lithium battery management system (BMS) to form a complete management, monitoring and control architecture. They ensure the safe, reliable and efficient operation of the battery system through their respective role division and collaboration.
Basic relationship:
1. Host computer
The host computer is the central control and management device of the system, which is mainly responsible for the monitoring, analysis and issuance of operation instructions of the overall data. The host computer communicates with the BMS in a two-way manner through a standard communication protocol (such as CAN bus, RS485, UART or Ethernet) to obtain the operating data of the battery pack, including key parameters such as voltage, current, temperature, SOC (state of charge), SOH (state of health), etc. The host computer analyzes and stores these data, and issues operation instructions according to the battery status, such as starting battery balancing, adjusting charging strategy, executing protection actions, etc. In addition, the host computer can also monitor multiple BMS modules to achieve remote monitoring, centralized control and maintenance management.
2. Lower computer The lower computer is responsible for interacting with sensors or actuators, collecting sensor data or performing specific control tasks. The lower computer passes the data to the BMS to perform tasks related to battery management. In some systems, the lower computer is also responsible for specific execution tasks, such as controlling the temperature adjustment device of the battery cell. The hardware platform of the lower computer usually includes a PXI chassis, a real-time processor and an I/O board, which is responsible for sequence execution and device call.
3. BMS
BMS is a device that directly manages the battery module and is responsible for the battery status monitoring, protection and control functions. BMS communicates with the host computer to report the battery status and receive instructions, and communicates with the lower computer to obtain the underlying sensor data or control specific actuators. BMS obtains the underlying sensor data, such as the voltage, current, temperature and other information of each battery cell, through the lower computer, and sends the key data to the host computer after local processing. BMS also has a variety of functions, including data collection, balancing management, protection functions and fault diagnosis, charging management, thermal management and alarm reminders.
Interaction between host computer, BMS and slave computer
1. Data flow:
Slave computer to BMS: The slave computer collects battery data and transmits it to BMS for centralized processing and management.
BMS to host computer: The processed data of BMS is uploaded to the host computer, which further analyzes and stores it, generates reports, predicts battery life, etc.
2. Instruction flow:
Host computer to BMS: The host computer sends operation instructions to BMS according to the operating status of the battery or the operator's instructions, such as adjusting the charging and discharging strategy, performing balancing or protection actions.
BMS to slave computer: BMS sends the instructions of the host computer to the slave computer to perform specific operation tasks, such as starting or stopping the battery protection device, adjusting temperature control, etc.
Communication and Protocol
1. Communication protocol between host computer and BMS:
Common communication protocols include CAN bus, RS485, Ethernet, UART, etc. These protocols provide reliable data transmission channels to ensure that data and instructions can be exchanged between the host computer and BMS in real time.
2. Communication protocol between BMS and lower computer:
The communication between the lower computer and BMS may use internal communication protocols such as I2C and SPI for fast exchange of sensor data and control commands. These protocols are usually used in short-distance, real-time communication scenarios.
Hierarchy of system architecture
Hierarchical architecture: The host computer, BMS and lower computer form a hierarchical architecture: The host computer is at the highest level and is responsible for global monitoring, data processing and system control.
1. As the middle layer, BMS not only performs specific battery management tasks, but also reports data to the upper computer and executes the instructions of the upper computer.
2. The lower computer is at the bottom layer, interacts directly with sensors and actuators, and provides local data acquisition and control functions.
