Storage battery monitoring system and method

A storage battery monitoring method, applied to a control module in a storage battery monitoring system, wherein the storage battery monitoring system further comprises n cell monitoring cells (CMCs) and at least two daisy chain buses, the n CMCs are configured to monitor a plurality of cell modules electrically connected in a storage battery in one-to-one correspondence, and each CMC is configured to monitor at least one of the plurality of cell modules;

• the n CMCs are connected to the control module through each of the at least two daisy chain buses;
• and n is an integer greater than or equal to 2;
• the storage battery monitoring method comprises:
• receiving monitoring data of the plurality of cell modules uploaded by the n CMCs through a transmission path formed by at least one of the at least two daisy chain buses;
• identifying a fault location according to the monitoring data when a fault occurring to the transmission path is detected;
• and
• adjusting the transmission path according to the fault location so as to receive the monitoring data;
• the at least two daisy chain buses comprise a first daisy chain bus and a second daisy chain bus;
• the fault location comprises a first fault location between a k-th CMC and a k+1-th CMC of the first daisy chain bus, and a second fault location between a k+1+a-th CMC and a k+2+a-th CMC of the second daisy chain bus, k being an integer greater than or equal to 1, a being an integer greater than or equal to 0, and k+2+a≤n;
• and
• the storage battery monitoring method further comprises:
• adjusting the transmission path based on an adjustment basis to obtain an adjusted transmission path, the adjustment basis comprising:
• switching transmission of the monitoring data from a line between the k-th CMC and the k+1-th CMC of the first daisy chain bus to a line between a k-th CMC and a k+1-th CMC of the second daisy chain bus;
• and
• switching transmission of the monitoring data from a line between the k+1+a-th CMC and the k+2+a-th CMC of the second daisy chain bus to a line between a k+1+a-th CMC and a k+2+a-th CMC of the first daisy chain bus.

A storage battery monitoring system, comprising:

• n cell monitoring cells (CMCs), a control module, and two daisy chain buses;
• wherein n is an integer greater than or equal to 2;
• the n CMCs are configured to monitor a plurality of cell modules electrically connected in a storage battery, and each CMC is configured to monitor at least one of the plurality of cell modules;
• the n CMCs are connected to the control module through each of the two daisy chain buses;
• the control module is configured to receive monitoring data of the plurality of cell modules uploaded by the n CMCs through a transmission path formed by at least one of the two daisy chain buses;
• the control module is further configured to identify a fault location according to the monitoring data when a fault occurring to the transmission path is detected, and adjust the transmission path according to the fault location so as to receive the monitoring data;
• the fault location comprises a first fault location between a k-th CMC and a k+1-th CMC of one of the two daisy chain buses, and a second fault location between a k+1+a CMC and a k+2+a CMC of another one of the two daisy chain buses, k being an integer greater than or equal to 1, a being an integer greater than or equal to 0, and k+2+a≤n;
• and
• an adjusted transmission path is:
• a circular transmission path formed by a line between the control module and a first CMC, the first CMC and the k-th CMC, the k+1-th CMC and the k+2+a-th CMC in the one of the two daisy chain buses, and between the k-th CMC and the k+1-th CMC, the k+2+a-th CMC and a n-th CMC, and the n-th CMC and the control module in the another one of the two daisy chain buses;
• or,
• a circular transmission path formed by a line between the control module and the first CMC and the first CMC and the k+1+a-th CMC in the another one of the two daisy chain buses, and between the k+1+a-th CMC and the n-th CMC and the n-th CMC the control module in the one of the two daisy chain buses;
• or,
• a transmission path formed a line between the control module and the first CMC, the first CMC and the k-th CMC, the k+1-th CMC and the n-th CMC in the one of the two daisy chain buses, and between the k-th CMC and the k+1-th CMC in the another one of the two daisy chain buses;
• or,
• a transmission path formed by a line between the k+2+a-th CMC and the k+1+a-th CMC in the one of the two daisy chain buses, and between the control module and the n-th CMC, the n-th CMC and the k+2+a-th CMC, and the k+1+a-th CMC and the first CMC in the another one of the two daisy chain buses.