A power management system for mobile unit

The utility model provides a power management system for mobile unit. It includes: DCDC module, OBD analysis chip, low -power consumption microprocessor, switch module and output, on -vehicle electronic equipment is connected to this output, this DCDC module, the DC voltage transform that should be used for providing this OBD interface is the required DC voltage of on -vehicle electronic equipment, this switch module is connected between this DCDC module and this output, OBD analysis chip for the OBD information that the analysis was acquireed, and output analytical information, this low -power consumption microprocessor is connected with this output and this OBD analysis chip respectively to provide the power by this OBD interface, the switching on and break off of this power management system's of analytical information control of being used for providing according to this OBD analysis chip the running state and the break -make of switch module, and transmit communication data. The all mistakes of this depa