Wireless power transmission device

A wireless power transmission device for use with a vehicular operating platform to transmit electric power to a closed receiver coil of an electronic device, said wireless power transmission device comprising:

• a main body disposed on said vehicular operating platform for supporting said electronic device thereon, wherein said main body comprises:
• a closed transmitter coil disposed within said main body, wherein when said closed transmitter coil is electrically conducted, said closed transmitter coil results in an electromagnetic effect, wherein in response to said electromagnetic effect, said electric power is generated and transmitted to said closed receiver coil;
• a contacting surface to be contacted with said electronic device;
• a first sidewall located at a first side of said contacting surface for supporting said electronic device, so that said electronic device is contacted with said contacting surface;
• and
• a triggering button disposed on said first sidewall, wherein when said electronic device is contacted with said contacting surface, said triggering button is triggered to issue an enabling signal;
• and
• a position-limiting plate located at a second side of said main body and movable relative to said main body, wherein when said enabling signal is received by said position-limiting plate, said position-limiting plate is moved toward said main body, so that said electronic device is fixed on said contacting surface, wherein when said triggering button stops issuing said enabling signal, said position-limiting plate is moved away from said main body and separated from said electronic device.