Voltage equalizing device

A voltage equalizer comprising:

• first, second, and third junction terminals respectively connected to a positive electrode of a first battery module, a positive electrode of a second battery module, and negative electrodes of the first and second battery modules;
• an equalizer circuit connected between the first and second junction terminals, the equalizer circuit forming a current path between the first and second junction terminals;
• a first indicator having a first displaying state that changes according to a voltage difference between the first and second junction terminals;
• a first comparator configured to output a first output voltage according to a first input voltage that is proportional to a voltage between the first and third junction terminals;
• a second indicator having a second displaying state that changes according to the first output voltage of the first comparator;
• a fuse comprising a first terminal connected to the first junction terminal and a second terminal connected to the equalizer circuit;
• a second comparator configured to output a second output voltage according to a second input voltage that is proportional to a voltage between the second terminal of the fuse and the third junction terminal;
• and
• a third indicator having a third displaying state that changes according to the second output voltage of the second comparator,
• wherein the first comparator is configured to receive the first input voltage corresponding to a voltage between the first terminal of the fuse and the third junction terminal.

A voltage equalizer comprising:

• first, second, and third junction terminals respectively connected to a positive electrode of a first battery module, a positive electrode of a second battery module, and negative electrodes of the first and second battery modules;
• an equalizer circuit connected between the first and second junction terminals, the equalizer circuit forming a current path between the first and second junction terminals;
• a first indicator having a first displaying state that changes according to a voltage difference between the first and second junction terminals;
• a first comparator configured to output a first output voltage according to a first input voltage that is proportional to a voltage between the first and third junction terminals;
• a second indicator having a second displaying state that changes according to the first output voltage of the first comparator;
• and
• a rectifier configured to perform full-wave rectification of a voltage between the first and second junction terminals and to output a resultant voltage to the first indicator,
• wherein the first indicator comprises a light emitting diode connected between output terminals of the rectifier, the light emitting diode being configured to be activated according to the resultant voltage.