Method for operating an electronic appliance, charging apparatus for charging a battery for an electronic appliance, and motor vehicle

1. A method for operating an electronic appliance which has a battery and a charging device for charging the battery with electric current, comprising:

using an application program on the electronic appliance, preselecting at least one functionality state of the electronic appliance by a user of the electronic apparatus, each functionality state corresponding to a different charging apparatus;

after preselecting the at least one functionality state, coupling the charging device to a current charging apparatus, which is external to the electronic appliance, for charging the battery;

supplying an electrical supply voltage to the charging device via the current charging apparatus, for charging the battery;

modulating an identification signal onto the supply voltage so as to change the supply voltage over a period of time, by the current charging apparatus;

evaluating the changes brought about to the supply voltage and using the identification signal at the electronic appliance to identify the current charging apparatus; and

after identifying the current charging apparatus, setting the electronic apparatus to the functionality state corresponding to the current charging apparatus.

2. The method as claimed in claim 1 , wherein

the electronic appliance is a mobile radio unit to wirelessly connect to a radio network, the mobile radio unit having a computing device to execute a computer program.

3. The method as claimed in claim 1 , wherein

the electronic appliance has a transmission module for wireless data transmission, and

the transmission module is set to the functionality state corresponding to the current charging apparatus.

4. The method as claimed in claim 1 , wherein

first and second functionality states of the electronic appliance are preselected by the user of the electronic apparatus,

the electronic apparatus is set to the first functionality state when the charging device is coupled to a first charging apparatus, and

the electronic appliance is set to the second functionality state when the charging device is coupled to a second charging apparatus, which is external to the electronic appliance, for charging the battery.

5. The method as claimed in claim 1 , wherein

the electronic apparatus is a device selected from the group consisting of a laptop computer, a personal digital assistant (PDA), a smartphone and a tablet personal computer.

6. The method as claimed in claim 1 , further comprising:

decoupling the charging device from the charging apparatus and deactivating the functionality state of the electronic apparatus corresponding to the current charging apparatus.

7. The method as claimed in claim 1 , wherein

the electronic appliance comprises a global positioning system (GPS) module, a Bluetooth data transmission module and a WiFi data transmission module, and

the at least one functionality state specifies whether at least one of the GPS module, the Bluetooth data transmission module and the WiFi data transmission module are activated or deactivated.

8. The method as claimed in claim 7 , wherein

the at least one functionality state specifies whether each of the GPS module, the Bluetooth data transmission module and the WiFi data transmission module are activated or deactivated.

9. The method as claimed in claim 1 , wherein

the charging apparatus is a motor vehicle charging apparatus, and

the at least one functionality state specifies activating Bluetooth data transmission and specifies deactivating WiFi data transmission.

10. The method as claimed in claim 1 , wherein

the signal is modulated onto the supply voltage by pulsing the supply voltage, only for a predetermined period of time.

11. A motor vehicle, comprising:

an operative charging apparatus to receive an electronic appliance which has a battery and a charging device, the operative charging apparatus being external to the electronic appliance, the operative charging apparatus supplying an electrical supply voltage to the charging device to charge the battery with electric current, the electronic appliance being received after a user uses an application program on the electronic appliance to preselect at least one functionality state of the electronic appliance, each functionality state corresponding to a different charging apparatus; and

a computing unit to modulate an identification signal onto the supply voltage supplied by the operative charging apparatus, so as to bring about changes in the supply voltage over a period of time, the identification signal being modulated onto the supply voltage so that the electronic apparatus evaluates the changes brought about to the supply voltage, uses the identification signal to identify the operative charging apparatus, and after identifying the operative charging apparatus, sets the electronic apparatus to the functionality state corresponding to the operative charging apparatus.