Switch power supply-based intelligent charging system for various batteries and control method thereof

Abstract

The invention discloses a switch power supply-based intelligent charging system for various batteries and a control method thereof. The system comprises an input circuit, wherein the input circuit is connected with an electromagnetic interference (EMI) inhibition module; the EMI inhibition module is connected with a primary rectifying and filtering module; one path of the primary rectifying and filtering module is connected with a transformer circuit through an residual-current device (RCD) peak inhibition module, and the other path of the primary rectifying and filtering module is connected with a switch power supply pulse width modulation (PWM) module; the output end of the transformer circuit is connected with an output control module and an auxiliary power supply module; the output control module is connected with a battery state detection module; and a signal feedback module is connected with a constant-current control module which is connected with the battery state detection module. The system can be independent of a Ni-Cd / Ni-MH / Li-ion rechargeable battery and can charge mixed batteries with different capacities; after quick and constant-current charging, trickle charge is performed to maintain the electric quantity of batteries; and the system can detect the voltage difference deltaV, maximum voltages, highest temperatures and charging time of the batteries, judge if the batteries are fully charged accordingly and adopt corresponding actions to ensure a safer charging process and the like.

Description

technical field [0001] The invention relates to the technical field of charging equipment, and relates to an intelligent charging system for safely and quickly charging a rechargeable battery. Background technique [0002] The charging process of the battery has the greatest impact on its life, while the impact of the discharging process is less, that is to say, most of the batteries are not used up, but charged. It can be seen that a good charger has a very critical impact on the life of the battery. A good charger needs a combination of good hardware and scientific software to protect the life of the battery to the greatest extent. For this reason, people have made unremitting efforts to make the charger better and better. If there is a fully intelligent pulse charger, this charger has the advantage of being able to charge the battery to a saturated state and protect the battery; Frequency pulse charger, which can effectively repair rechargeable batteries, prolong battery...

AI Technical Summary

Problems solved by technology

However, these solutions still have many defects while making progress. For example, during the charging process, the change of temperature will have a significant impact on the charging process, and the existing technology is not ideal in solving the impact of temperature on charging; and the daily The battery used cannot work in a constant temperature environment for a long time, so it is not perfect to use the same mode to charge the battery

In addition, the current charging technologies are all classified, that is, different types of batteries should be charged with corresponding chargers, such as NI-Cd (nickel cadmium), Ni-MH (nickel metal hydride), Li-ion (lithium battery) batteries etc. need to be charged with Ni-Cd battery charger, Ni-MH battery charger, and Li-ion battery charger respectively, otherwise the battery will be damaged, which will bring great inconvenience to use and cause waste of resources

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