NOn-Contact Charging System Having Device for Indicating Charging Efficiency and Method for Indicating Charging Efficiency

摘要

PURPOSE: A non-contact charging system including a charging efficiency display device and a charging efficiency displaying method are provided to perform non-contact charging with high charging efficiency by displaying calculated charging efficiency for a user. CONSTITUTION: Non-contact charging is started in a Trickle Charge Mode(S10). Charging efficiency is calculated and displayed(S20). The variation of a charging frequency is determined during a determined time(S21). The calculated charging efficiency from the changed charging frequency is redisplayed. The final calculated charging efficiency is determined whether the charging efficiency exceeds limit efficiency(S30). If the calculated charging efficiency does not exceed the limit efficiency, a warning signal is displayed through a display means(S41). A user moves a cellular phone from a charging pad(S42). [Reference numerals] (AA) Start; (S10) Non-contact charging start; (S20) Charging frequency detection and charging efficiency calculation/display; (S21) Charging frequency change?; (S30) Charging efficiency65%; (S41) Warning; (S42) Position movement; (S43) Charging frequency change?; (S44) Charging efficiency calculation/display position guidance; (S50) Charging complete?; (S60) End; (S71) Charging current change; (S72) Charging frequency detection charging efficiency calculation/display; (S80) Charging current limitation