The invention relates to a device and a method for online maintenance of uniformity of a storage battery through utilization of correlated characteristics of electrochemical reaction and environment temperature inside the storage battery to carry out independent differential control on storage battery
monomer temperature. According to the picture of 5-A, the device comprises a
master controller (1C),
voltage sensors (2C), temperature sensors (3C), cold-
hot temperature control
wafer modules (4C), water-cooled radiators (5C) and
monomer heat separating belts (6C), wherein the
voltage sensors (2C), the temperature sensors (3C), the cold-
hot temperature control
wafer modules (4C), the water-cooled radiators (5C) and the
monomer heat separating belts (6C) are paired on each monomer. The
master controller detects degree of deviation of real-time
voltage of each monomer which has undercharging or overcharging problem in real time, controls the cold-
hot temperature control
wafer module to independently control the temperature of the corresponding monomer to special
temperature difference, and enables the electrochemical reaction to be relatively enhanced (or decreased) and to gradually tend to be balanced with charging or discharging of the normal monomers. Meanwhile, the
master controller monitors the best
working temperature with the uniform trend of other normal monomers in real time. The storage battery is often used in
electric cars,
telecommunications,
electric power, banks and the like, and is formed by several monomers to hundreds of monomers in a series connection mode.