A battery 
management system based on a real time operation 
system which belongs to the technical field of vehicle storage battery management includes a CPU, a load 
voltage collecting module, a total 
voltage collecting module, a module 
voltage collecting module, a current collecting module, a temperature collecting module, a time collecting module, a 
CAN bus communicating module and a 
contactor control module. The CPU is respectively connected with a voltage collecting module, the current collecting module, the temperature collecting module, the time collecting module, the 
CAN bus communicating module and the 
contactor control module. The battery 
management system based on a real time operation 
system transplants a uc / OS-II multi-task real time operation 
system into the CPU, thus simplifying the 
software programming of a vehicle storage battery 
management system under the dispatching of the real time operation system, improving the execution efficiency to manage the 
system software, ensuring the real time property of data collection and enhancing the working stability of the system.