Door lock system

The utility model discloses a door lock system is through setting up NFC receiving antenna, antenna matching circuit, power supply circuit, NFC energy extraction module and battery in door lock systemto establish ties NFC receiving antenna, antenna matching circuit, NFC energy extraction module, power supply circuit and battery in proper order. NFC receiving antenna receives the radio frequency energy that carries the mobile device of NFC function to pass through the antenna matching circuit that connects, send the module for NFC energy extraction with the radio frequency energy, the NFC energy extraction module sends the radio frequency energy for power supply circuit, charges for the battery through power supply circuit. The utility model discloses a when the battery low of intelligentlock, charge for intelligent lock by the mobile device that the user carried, avoided because intelligent lock battery low to can not lead to the user to open the door the condition appears. 本实用新型公开了种门锁系统，通过在门锁系统中设置NFC接收天线、天线匹