Method and system for allocating communication ID of battery management module

A battery management module comprising:

• a communication interface that enables transmitting and receiving of data signals;
• a signal receiver that receives a pulse signal through the communication interface;
• a signal transmitter that outputs a pulse signal through the communication interface;
• and
• a controller that receives a pulse signal through the signal receiver, allocates a communication ID according to a pulse width of the received pulse signal, generates a pulse signal having a pulse width corresponding to a communication ID different from the allocated communication ID, and outputs the generated pulse signal to the communication interface through the signal transmitter.

A method for allocating a communication ID of each battery management module in a battery management system comprising a first to nth battery management modules sequentially connected through a communication interface, the method comprising:

• (a) recognizing that a pulse signal is not received through the communication interface and setting itself as a master module, by the first battery management module;
• (b) generating a pulse signal having a pulse width corresponding to a communication ID of the second battery management module and outputting the generated pulse signal to the second battery management module through the communication interface, by the first battery management module;
• and
• (c) by the kth battery management module (2≤k≤n−1, k is a natural number), receiving a pulse signal from a battery management module at a higher level through the communication interface, allocating its communication ID to correspond to the pulse width of the received pulse signal, and generating a pulse signal having the pulse width corresponding to the communication ID of the battery management module at a lower level and outputting the generated pulse signal through the communication interface.

A communication ID allocation method using a communication interface, the method comprising:

• receiving a pulse signal through the communication interface;
• allocating a communication ID according to a pulse width of the received pulse signal;
• generating a pulse signal having a pulse width corresponding to a communication ID different from the allocated communication ID;
• and
• outputting the generated pulse signal through the communication interface.