Electric motor car charging and discharging state monitoring system

The utility model discloses an electric motor car charging and discharging state monitoring system, including battery, charger and controller, the system still including filling the discharge protection device, should fill the discharge protection device and locate between battery and charger and battery and the controller current sample module, voltage sample module, single bus communication module to reach the host system who is connected with above -mentioned each module, the current sample module concatenates on the connecting wire of battery and charger and battery and controller, the voltage sample module is connected with the battery, single bus communication module one end is connected host system, external equipment is connected to the other end, and external equipment includes charger and/or controller. The utility model discloses a battery parameter is gathered in real time to electric current, voltage sample module, based on bus communication, temperature monitoring and early warning module, guara