Patent ID: 8643991

Claim:
An over voltage protection (OVP) monitoring system, comprising: a battery pack connected to an external system, the battery pack including a battery; a first memory to store a voltage value of the battery; a second memory comprising a first sub-memory and a second sub-memory to store numbers of OVP operations of the battery; a controller to store the voltage value of the battery in the first memory upon an occurrence of an OVP operation and to increment a number of OVP operations stored in either the first sub-memory or the second sub-memory according to the voltage value of the battery stored in the first memory; and a signal generator to generate either a first alarm signal indicating a need to check the external system or a second alarm signal indicating a need to check the battery pack according to numbers of OVP operations stored in at least one of the first sub-memory and the second sub-memory of the second memory.