Wireless power system with device priority

A wireless power receiving device configured to wirelessly receive power during wireless power transmission from a wireless power transmitting device having a charging surface, comprising:

• wireless power receiving circuitry;
• a motion sensor configured to produce motion sensor data;
• a display;
• and
• control circuitry configured to:
• display a charging status indicator on the display;
• and
• monitor the wireless power receiving circuitry to determine whether the wireless power is being received;
• in response to determining that the wireless power is not being received and that the motion sensor does not indicate that the wireless power receiving circuitry has been lifted from the charging surface, initiate a charging status indicator debounce period having a first value;
• and
• in response to determining that the wireless power is not being received and that the motion sensor indicates that the wireless power receiving circuitry has been lifted from the charging surface, initiate a charging status indicator debounce period having a second value that is less than the first value.

A wireless power receiving device configured to wirelessly receive power during wireless power transmission from a wireless power transmitting device having a charging surface, comprising:

• wireless power receiving circuitry including a coil and a rectifier, wherein the rectifier is configured to receive wireless power signals with the coil and is configured to supply a corresponding output voltage;
• a three-axis accelerometer;
• control circuitry configured to:
• monitor the output voltage;
• transmit power adjustment commands to the wireless power transmitter based at least partly on the monitored output voltage;
• monitor the three-axis accelerometer;
• and
• in response to determining that the wireless power transmission has decreased while the three-axis accelerometer indicates that the wireless power receiving device has not been moved vertically from the charging surface, transmit a power adjustment command to the wireless power transmitting device requesting an increased in transmitted power;
• and
• in response to determining that the wireless power transmission has decreased while the three-axis accelerometer indicates that the wireless power receiving device has been moved vertically from, but not laterally on, the charging surface, cease transmitting the power adjustment commands.

One or more non-transitory, computer-readable media having instructions that, when executed by one or more processors, cause a device to:

• display a charging status indicator;
• produce motion sensor data;
• monitor wireless power receiving circuitry in the device to determine whether wireless power is being received;
• in response to determining that the wireless power is not being received and that the motion sensor data does not indicate that the wireless power receiving circuitry has been lifted from a charging surface of a wireless power transmitting device, initiate a charging status indicator debounce period having a first value;
• and
• in response to determining that the wireless power is not being received and that the motion sensor data indicates that the wireless power receiving circuitry has been lifted from the charging surface, initiate a charging status indicator debounce period having a second value less than the first value.

One or more non-transitory, computer-readable media having instructions that, when executed by one or more processors, cause a device to:

• monitor a rectified output voltage and accelerometer data;
• transmit power adjustment commands to a wireless power transmitter based at least partly on the rectified output voltage;
• in response to determining that wireless power transmission has decreased while the accelerometer data indicates that the device has not been moved vertically from a charging surface of the wireless power transmitter, transmit a power adjustment command to the wireless power transmitter requesting an increased in transmitted power;
• and
• in response to determining that the wireless power transmission has decreased while the accelerometer data indicates that the device has been moved vertically from, but not laterally on, the charging surface, cease transmitting the power adjustment commands.