Multi-battery voltage real-time monitoring system and use method thereof

The invention discloses a multi-battery voltage real-time monitoring system, and belongs to the technical field of battery detection. The multi-battery voltage real-time monitoring system includes a plurality of relays, a plurality of digital display voltmeters, a voltage converter and an electric door lock; after the relays are connected in parallel, the on-off of the relays is controlled by a low voltage output from the voltage converter connected with an on-board battery pack; each relay is connected with each battery in the on-board battery pack correspondingly; and each battery is connected with each digital display voltmeter through the corresponding relay in a corresponding mode, an on-off state of each digital display voltmeter is controlled by the electric door lock. According tothe multi-battery voltage real-time monitoring system and the use method thereof, by connecting the relays and the various digital display voltmeters, a multi-battery voltage real-time monitor is formed, and monitoring of eac