| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a state detection method of a battery module. <P>SOLUTION: The battery module 2 comprises battery units 21, 22 and 23, and is connected to a load 3. The state detection method of the battery module 2 includes the following steps. First, on-load voltage values of the battery units 21, 22, and 23 and a value of a load current flowing through the load 3 are measured. Then, momentary resistance values of the battery units 21, 22 and 23 are calculated based on no-load and on-load voltage values of the battery units 21, 22 and 23, and the load current values. Finally, operation states of the battery units 21, 22 and 23 are acquired based on a relation between momentary resistance, internal resistance and discharge time. The present invention permits a user to accurately measure remaining energy of the battery module 2 in real time and prevent danger caused by electricity generated by excessive discharge of the battery module 2. <P>COPYRIGHT: (C)2012,JPO&INPIT |
