Battery management system, and method and apparatus for transmitting information

A method for transmitting information in a battery management system, comprising:

• receiving frequency conversion information transmitted by a master node in the battery management system;
• forwarding the frequency conversion information to a fault slave node, so that the fault slave node performs a frequency conversion based on the frequency conversion information, and the master node transmits information with the fault slave node using the frequency after the frequency conversion,
• wherein the fault slave node is a slave node, determined by the master node from a plurality of slave nodes, that communicates abnormally with the master node,
• wherein when the master node successfully transmits information with the fault slave node using the frequency after the frequency conversion, the frequency after the frequency conversion is transmitted by the master node to all slave nodes of the plurality of slave nodes except the fault slave node.

A method for transmitting information in a battery management system, comprising:

• receiving frequency conversion information transmitted by a target slave node, wherein the target slave node is a slave node selected from a plurality of slave nodes by a master node in the battery management system, and the target slave node is a slave node that communicates normally with both the master node and a fault slave node, and wherein the fault slave node is a slave node, determined by the master node from the plurality of slave nodes, that communicates abnormally with the master node;
• and
• performing a frequency conversion based on the frequency conversion information, so that the master node uses a frequency after the frequency conversion to transmit information with the fault slave node,
• wherein when the master node fails to select the target slave node from the plurality of slave nodes, the method further comprises:
• performing a timed frequency hopping based on a preset frequency hopping rule within a preset time period, and transmitting information with the master node using a frequency after the frequency hopping,
• wherein the frequency after the frequency hopping is consistent with a frequency of the master node after a timed frequency hopping based on the preset frequency hopping rule.