Mobile phone APP obtain charging pile information system and load balancing method, and renting method

The invention relates to a mobile phone APP obtain charging pile information system and load balancing method, and a renting method; the mobile phone APP obtain charging pile information system comprises a mobile phone lease APP, a network management platform, a sub-service module, and a charging pile terminal controller; the network management platform comprises member authentication service, heartbeat and message push service, an APP service group and a member registration state database; the sub-service module comprises a sub-service group and a charging pile state database; the charging pile terminal controller comprises a charging pile state monitoring module, a charging pile power on/off management module, and an electric vehicle predetermined charging pile binding module. A sub-service load equalizer and an APP service load equalizer can share the mobile phone APP member and electric vehicle access pressure onto different APP service and sub-service, thus realizing load balancing and transferring communication faults, and reducing system access pressure. The car rental, car returning, recording, accounting and charging services can be finished in a self-service mode, thus saving labor and time.