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 Wireless Charging Pad (WCP) module. (Tolerance is +/- 10mm). This retention feature is designed to accommodate all Wireless Power Consortium (WPC) phones and all receiving coil replacements.

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

Communication -  The WCP communicates with the Body Control Module (BCM) over the Local Interface Network (LIN). The WCP outputs to the BCM when a device has been detected. If a valid device is detected, wireless charging begins.

Timers -  The WCP module 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 module also has an idle mode where it will be continuously searching for a consumer device with the ignition ON.

WCP and WCP Module Electrical Requirements

• Power to the 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 in the ON position.
• The nominal operating voltage of the WCP is 13.5v.