US 12,066,845 B2
Device heater module
James Utz, Austin, TX (US); Jeffrey R. Taus, Austin, TX (US); and Zachary A. Cravens, Round Rock, TX (US)
Assigned to DELL PRODUCTS, L.P., Round Rock, TX (US)
Filed by Dell Products, L.P., Round Rock, TX (US)
Filed on Sep. 23, 2021, as Appl. No. 17/483,225.
Prior Publication US 2023/0086310 A1, Mar. 23, 2023
Int. Cl. G05D 23/19 (2006.01); G06F 1/18 (2006.01); G06F 1/26 (2006.01)
CPC G05D 23/1928 (2013.01) [G06F 1/181 (2013.01); G06F 1/187 (2013.01); G06F 1/263 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device heater module, comprising:
a memory; and
a controller coupled to the memory, a temperature sensor adapted to detect a temperature at a device, a heater adapted to heat the device, and a switch that selectively disconnects and reconnects a power source and the device, wherein the controller is adapted to perform operations, comprising:
in response to detecting, via the temperature sensor, that the temperature is below a threshold low temperature, activating the heater and operating the switch to disconnect the power source and the device, wherein the power source is an external power supply during normal operations and a battery during a power failure scenario;
subsequent to activating the heater, operating the switch to reconnect the external power supply and the device upon completion of a heating cycle;
subsequent to completion of the heating cycle, allowing the device to complete a boot process; and
accessing heater activation instructions from the device, upon completion of the boot process, to operate the heater in a continuous mode at different power values to maintain the temperature at the device within an operating temperature range of the device.