초록 ▼

Known is an induction charging apparatus for charging battery means in an electronic device when inductively coupled to the charging apparatus, the charging apparatus comprising a first casing having a charging receptacle for receiving the electronic device and an alternating current power source co

Known is an induction charging apparatus for charging battery means in an electronic device when inductively coupled to the charging apparatus, the charging apparatus comprising a first casing having a charging receptacle for receiving the electronic device and an alternating current power source coupled to a primary coil provided in the first casing, and the electronic device comprising a second casing provided with a secondary coil electronically coupled to the battery means, whereby the primary and the secondary coil are magnetically coupled for inductively conveying energy from the primary coil to the secondary coil when the electronic device is put in the receptacle. So as to prevent heating metallic objects that might enter the receptacle when the phone is not being charged but used, the induction charging apparatus comprises electric power blocking means for blocking power to be conveyed from the alternating current power source to the primary coil when the electronic device is absent from the charging receptacle, and the electronic device comprising unblocking means for unblocking the power to be conveyed, whereby the blocking and unblocking means are paired. Herewith, a cheap and reliable means for preventing such undesired heating are provided.

대표청구항 ▼

[ I claim:] [1.] An induction charging device for charging a rechargeable battery means in an electronic device, said induction charging device comprising:a first casing having a charging receptacle for receiving said electronic device, said electronic device having a second casing of an external sh

[ I claim:] [1.] An induction charging device for charging a rechargeable battery means in an electronic device, said induction charging device comprising:a first casing having a charging receptacle for receiving said electronic device, said electronic device having a second casing of an external shape at least partly matching an internal shape of said charging receptacle;a primary coil for magnetic coupling to a secondary coil comprised in said electronic device so as to inductively convey energy for charging said rechargeable battery means;an alternating current power source for coupling to said primary coil;said charging receptacle comprising a first mechanical presence indication means of a first shape for cooperating with a second mechanical presence indication means of a second shape matching said first shape, said second mechanical presence indication means being a part of said second casing, said alternating current power source being de-coupled from said primary coil if said electronic device is not introduced into said charging receptacle, and said first mechanical presence indication means being arranged for controlling said alternating current power source to be coupled to said primary coil if said electronic device is introduced into said charging receptacle.