Electric bicycle intelligent charging system and charging method with fire and explosion-proof function

Abstract

The invention discloses an intelligent charging system and charging method for an electric bicycle with the fireproof and explosion-proof function and belongs to the field of electric bicycles. The device comprises a server and an intelligent charger. The intelligent charger comprises a microcontroller, an AC switch connected with the microcontroller, an adjustable DC power supply, a charge control switch, a voltage acquisition module, a current acquisition module, a data transmission module and a liquid crystal display module. In addition, the invention also provides a charging method of an electric bicycle battery based on the charging system. The invention has the advantages that: Battery voltage can be collected during charging, Charging current, battery temperature, Environment temperature and other charging state information, and the measured data are sent to the background server through the wireless mode, and the background server estimates the battery charging state and the actual battery capacity according to the battery charging data, which can match different types of batteries, automatically adjust the charging parameters, and solve the problem that the electric bicycle charger cannot be universal.

Description

technical field [0001] The invention belongs to the technical field of electric bicycles, and in particular relates to an intelligent electric bicycle charging system and charging method with fireproof and explosion-proof functions. Background technique [0002] Ordinary chargers are only suitable for fixed-type batteries. If the charger does not match the battery signal, it may cause the battery to fail to charge or be severely overcharged, or even cause the battery to catch fire and explode. The charging parameters of the conventional charger are adjusted according to the parameters of the new battery. As the battery ages during use, the internal resistance of the battery will increase, the capacity will decrease, and the charging tail current will increase, which will cause the charger to fail. Switching from the equalizing charge state to the float charge state in time will also cause the battery to be seriously overcharged or even cause a fire. After investigation, mor...

AI Technical Summary

Problems solved by technology

[0002] Ordinary chargers are only suitable for fixed-type batteries. If the charger does not match the battery signal, it may cause the battery to fail to charge or be severely overcharged, or even cause the battery to catch fire and explode.

The charging parameters of the conventional charger are adjusted according to the parameters of the new battery. As the battery ages during use, the internal resistance of the battery will increase, the capacity will decrease, and the charging tail current will increase, which will cause the charger to fail. Timely change from the equal charge state to the floating charge state will also cause serious overcharge of the battery and even cause a fire

After investigation, more than 80% of the fire accidents caused by electric bicycles occurred during charging at night. Many electric bicycle users mainly charge at night. Ordinary chargers cannot automatically cut off the power after the battery is fully charged, which greatly increases the battery overcharge. fire hazard

In addition, ordinary chargers have no temperature compensation function, which may easily cause undercharging in winter and overcharging in summer, and there is no protection function for abnormal battery temperature during charging.

Conventional chargers do not have a hardware self-test function. If the current limiting or voltage limiting circuit components are damaged, it may cause a safety accident

Ordinary chargers display the charging status only with the charging indicator and the full indicator, the user cannot obtain detailed charging data, and there is no information interaction with the user

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