Wireless Charging Pad Module

DESCRIPTION 

Courtesy of CHRYSLER GROUP, LLC

1 - WCP Module

2 - Phone Holder

The Wireless Charging Pad (WCP) module and pad are located at center of the instrument panel just above the cup holder in the phone holder.

The wireless charging system is enabled when the vehicle is in running condition and the vehicle battery is sufficiently charged.

There is an LED on the wireless charging base. The LED notifies the charging status of the smartphone. It has colors:

• No Color  - There are no objects in the compartment and/or the vehicle ignition device is in the STOP position and/or the doors are not all closed properly and the engine is not running.
• Red LED  - Wireless charging system malfunction or a smartphone that is not enabled for wireless charging or a prohibited object (credit cards, coins etc.) has been placed on the charging base.
• Blue LED  - The smartphone is correctly positioned on the charging base and the system is activated.
• Green LED  - Charging completed.

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

Diagnostic Trouble Codes  - 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 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 13.5 volts.

Inputs 

• Battery critical SoC message from the BCM.
• The commanded ignition status from the BCM.
• Door ajar switch signal from the BCM.
• Dimming strategy from the BCM.
• A 12 volt ignition feed.

Outputs 

• With 12 volts supplied to the WCP it is capable of delivering 5 watts of power output at 0.42 amps to the receiver.
• Wireless Charging Pad Module temperature error messages to the BCM.
• Wireless Charging Pad Module communication error message to the BCM.
• Wireless Charging Pad Module coil disconnected error message to the BCM.