With the rapid development of intelligent manufacturing and automation technology, automatic guided vehicle (AGV) is increasingly widely used in logistics, warehousing, production lines and other fields. As one of the core components of AGVs, the performance of power batteries directly affects the working efficiency and safety of AGVs. In order to achieve efficient battery management and monitoring, the communication between the control system and the power battery is particularly important. Among them, control area network (CAN) communication, as a common communication protocol, plays a vital role in the power battery management of AGVs. This article will discuss why CAN communication is needed for the power battery of AGV vehicle, and analyze its advantages and application scenarios.

I. Basic concepts of CAN communication

control Area Network (CAN) is a multi-host serial communication Protocal, which was first developed by Bosch company in 1986 and widely used in automobile, industrial automation, intelligent equipment and other fields. CAN communication adopts differential signal transmission, which has the advantages of strong anti-interference ability, fast transmission speed, high real-time performance, etc. It has a simple structure and can support simultaneous communication between multiple nodes, which is an ideal choice for efficient information transmission between battery management system (BMS) and AGV control system.

II. Management requirements for power batteries of AGV vehicles

the management of the power battery of the AGV vehicle involves many aspects, including battery status monitoring, charge and discharge control, fault diagnosis and energy management, etc. In order to ensure the safety and reliability of AGVs, the battery management system needs to obtain various data of the battery in real time, such as voltage, current, temperature, remaining power and other information. These data are not only used to monitor the health status of the battery, but also used to optimize the operating efficiency of the AGV.

1. Real-time monitoring

during the working process of the AGV vehicle, the status of the battery will change with the workload and environmental conditions. Through CAN communication, the battery management system CAN monitor the running status of the battery in real time and obtain the data of the battery such as voltage, current and temperature in time to ensure that the battery runs within a safe range.

2. Fault diagnosis

during the operation of the AGV vehicle, various faults may occur in the battery, such as short circuit, overcharge, overdischarge, etc. Through CAN communication, BMS CAN quickly transmit fault information, timely alarm and fault diagnosis to ensure the safety and stability of AGVs.

3. Charge and discharge control

in the process of using AGV, reasonable charging and discharging strategy is very important. CAN communication CAN realize information sharing between the AGV control system and the battery management system, so as to automatically adjust the charging and discharging strategy according to real-time data, optimize the use efficiency of the battery and prolong its service life.

III. Advantages of CAN communication in the power battery of AGV vehicles

1. Anti-dryStrong disturbance capability

in the working environment of the AGV vehicle, there are various sources of electromagnetic interference. CAN communication adopts differential signal transmission, which CAN effectively resist external interference and ensure accurate data transmission. This anti-interference feature is crucial to ensure the stable operation of the AGV.

2. High real-time performance

CAN communication protocol supports efficient data transmission and CAN complete transmit & receiving of data in microseconds. This real-time feature enables the AGV vehicle to quickly respond to changes in battery status and ensure safe and efficient operation.

3. Strong network scalability

as the application scale of AGVs expands, it may be necessary to connect multiple batteries and control units. The network structure of CAN communication allows multiple nodes to access at the same time, supports system expansion and upgrade, and adapts to the application requirements of different sizes of AGVs.

4. High reliability

the CAN communication protocol has high fault tolerance and CAN continue to maintain the normal operation of the system in the event of some node failures. This feature ensures the reliability of AGVs in complex environments and reduces potential safety hazards caused by communication failures.

IV. Application scenarios

1. Logistics warehousing

in the field of logistics and warehousing, AGV vehicles usually need to work continuously for a long time, and battery management is particularly important. Through CAN communication, AGVs CAN monitor the battery status in real time to ensure stable operation under high load conditions and improve logistics efficiency.

2. Production line

in the automation system of the production line, the AGV truck is responsible for the handling and transportation of materials. CAN communication CAN realize efficient coordination between battery and production line control system, optimize production process and reduce manual intervention.

3. Intelligent manufacturing

in the intelligent manufacturing environment, the flexibility and autonomy of AGVs are required to be higher. Through CAN communication, the battery management system CAN seamlessly connect with other smart equipment to achieve more efficient energy management and data sharing and improve overall production efficiency.

AGV car the management of CAN plays an important role in ensuring its safety and operation efficiency. Through real-time monitoring, fault diagnosis and charge and discharge control, CAN communication provides an efficient and reliable management scheme for the power battery of AGV. Its advantages of strong anti-interference ability, high real-time performance, strong network scalability and high reliability make CAN communication an indispensable part of the power battery management of AGVs.