Module, Wireless Charging Pad: Operation

Wireless Charging Requirements  - Wireless charging requires a transmitting coil (built into the charging pad tray) and a receiver coil which is integrated in the phone. The received coil gets aligned to the transmitting coil, and power is then transmitted.

Retention Feature  - The retention feature is in place to hold the phone during vehicle and console movement. This also used to align the phone with the transmitting coil that is internal to the module. (Tolerance is +/- 10mm). This retention feature is designed to accommodate all WPC phones, larger and smallest, and all receiving coil replacement.

The Wireless Charging Module is capable of setting two Diagnostic Trouble Codes (DTC); Loss of communication and internal error faults. The module itself is not repairable and will need to be replaced if diagnostics lead to module failure.

Communication -  The WCP communicates with the BCM over the LIN bus. The WCP outputs to the BCM if a device has been detected. If a valid device is detected, charging begins.

Timers -  The WCP has a watch dog timer for two modes; the pad will automatically go into OFF mode after 5 minutes if no device is charging, and it will go into sleep mode 30 minutes after key off if a device has been left to charge with the ignition off. The WCP also has an idle mode where it will be continuously searching for a consumer device with the ignition ON.

Wireless Charging Pad Electrical Requirements

• Power to the Wireless Charging Pad (WCP) should be no greater than 10 watts.
• The WCP will transfer up to 5W to the receiver.
• The WCP has the capability to shut itself off if the system voltage drops below 12 volts with ignition off for a duration of 30 seconds.
• The WCP has an idle mode where it constantly searches for consumer devices with the ignition transittioned to the ON position.
• The nominal operating voltage of the WCP is 13.5v.