Charging and discharging state monitoring system for electric vehicle storage batteries

• Main Author: XING JIANQIANG
• Format: Patent
• Language: Chinese; English
• Published: 24.11.2017
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSPORTING; VEHICLES IN GENERAL

The invention discloses a charging and discharging state monitoring system for electric vehicle storage batteries. The system comprises a flyback switching power supply and a charging and discharging control module connected with the flyback switching power supply; the flyback switching power supply comprises an EMI filtering module, an AC/DC conversion device, a high-frequency transformer and a loop compensation module; the charging and discharging control module comprises a charging control circuit, a storage battery, a discharging control circuit, a charging current detection module, a terminal voltage detection module, a microcontroller module, a discharging current detection module, a man-machine interaction module and a PWM driver. According to the system, by analyzing voltage and current changes in the working process of the storage battery, the working process of the storage battery is reasonably controlled, and thus the cycle life of the storage battery is guranateed and prolonged. 本发明公开了种电动汽车蓄电池充放电状