Device and method for online maintenance of storage battery in temperature difference control mode

Abstract

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.

Description

Technical Field: [0001] The invention relates to a method that utilizes the characteristic that the internal electrochemical reaction of a battery is significantly related to the ambient temperature to adjust the ambient temperature of each monomer of the battery pack to maintain online maintenance of the undercharged or overcharged monomers to make them electrochemically The response is relatively enhanced (or weakened) and gradually tends to balance the charge / discharge of the normal cells, thereby restoring the consistency and reliability of the battery pack. Background technique: [0002] Battery packs are widely used in energy storage applications in electric vehicles, solar / wind power generation and other industries, as well as emergency backup applications in telecommunications, power, banking, data centers and other industries. They are usually composed of several to hundreds of cells in series; use The overall capacity and reliability of the battery pack after a period o...

AI Technical Summary

Problems solved by technology

However, there is no way to control the difference in ambient temperature of individual cells of the battery pack, especially for a battery pack that has been used for a period of time and has obvious undercharging or overcharging of the monomers, it cannot be resolved at the same time, so that the consistency of the battery pack cannot be effectively restored

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