Battery information acquisition device, system and method

The invention discloses a battery information acquisition device, system and method. The battery information acquisition device comprises a positive electrode connecting piece used for connecting a positive electrode of a battery, a cathode connecting piece used for connecting a negative electrode of the battery, a power supply module used for realizing power taking of the battery information acquisition device from battery positive and negative electrodes, an information acquisition module used for acquiring working information of the battery, a data storage module used for storing the working information of the battery and storing environment information sent to the battery information acquisition device by a transfer module, and a wireless communication module used for sending the working information and the environment information to the transfer module. According to the battery information acquisition device, the battery can be directly used for providing power to monitor and analyze the information of t