An intelligent control energy storage battery fast charging system

Abstract

The invention relates to an intelligent-control multifunctional multi-type energy-storage-battery quick charging system. The system is composed of a main circuit and subcircuits. The main circuit comprises a single chip microcomputer, a voltage input circuit, a power source circuit, an oscillating circuit, a keyboard input and display alarm circuit, a signal collection processing circuit and a signal output circuit, wherein the power source circuit is further connected with the subcircuits. Compared with the prior art, the system has the advantages that the functions of leakage detection, heat management, battery equalization management, alarm reminding, surplus capacity calculation, discharger power, SOC, SOH and DOD state reporting are achieved for batteries; the system has the functions of overvoltage protection, battery heat management and the like; corresponding charging methods are designed for different types of energy storage batteries, so that all types of the energy storage batteries can be charged under the optimal charging methods; the function of controlling the maximum output power and other functions can further be achieved for electric cars and the system further has the advantages of being simple in device, small in size, light in weight, quick in reaction speed, low in cost, long in service life and the like.

Description

technical field [0001] The invention relates to the technical field of energy storage battery control and fast charging, in particular to an intelligent control system for realizing multiple functions of charging multiple types of energy storage batteries. Background technique [0002] Energy storage batteries provide power for electric forklifts and electric vehicles, and the charging and discharging performance of energy storage batteries directly affects its use and life. Energy storage batteries are generally divided into lead-acid batteries, nickel-cadmium batteries, nickel-metal hydride batteries, lithium-ion batteries, and lithium iron phosphate batteries. Due to the wide variety of energy storage batteries and different capacities, batteries such as lithium-ion batteries and lithium iron phosphate cannot be used in the form of a single battery but a battery pack. Therefore, energy storage batteries of different types and capacities often require different charging a...

AI Technical Summary

Problems solved by technology

When charging / discharging battery packs connected in series, some batteries may be fully charged / discharged before other batteries. Continued charging / discharging will cause overcharge / overdischarge. The internal side reactions of lithium batteries will lead to battery capacity drop, thermal runaway or internal Short circuit and other problems

2) Excessive current

Parallel connection, aging, low temperature and other conditions will cause the current of some batteries to exceed their capacity and reduce the service life of the battery

3) The temperature is too high

Excessive local temperature will reduce the performance of the battery, eventually leading to internal short circuit and thermal runaway, causing safety problems

4) Short circuit or leakage

Due to vibration, heat, dust and other factors, the battery short circuit or leakage may threaten the personal safety of drivers and passengers.

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