Medical device temperature estimation

A device comprising:

• a hybrid circuit board;
• a housing;
• a rechargeable power source;
• a temperature sensor configured to sense a temperature of the hybrid circuit board during a charging process of the rechargeable power source;
• and
• processing circuitry operably coupled to memory, the processing circuitry configured to:
• determine, based on the temperature of the hybrid circuit board and an algorithm, a temperature of the housing, wherein the algorithm is representative of an estimated temperature differential between the hybrid circuit board and the housing, the estimated temperature differential determined based on a transfer function, and wherein the transfer function is based on a value from one of an electrical component or thermal characteristic associated with the charging process;
• and
• control the charging process of the rechargeable power source based on the determined temperature of the housing.

A non-transitory computer-readable medium comprising instructions that, when executed, are configured to cause processing circuitry of a device to:

• receive a temperature, sensed by a temperature sensor, of a hybrid circuit board of the device during a charging process of a rechargeable power source of the device;
• determine, based on the temperature of the hybrid circuit board of the device and an algorithm, a temperature of a housing of the device,
• wherein the hybrid circuit board is not thermally coupled to the housing of the device, and
• wherein the algorithm is representative of an estimated temperature differential between the hybrid circuit board and the housing, the estimated temperature differential determined based on a transfer function, and wherein the transfer function is based on a value from one of an electrical component or thermal characteristic associated with the charging process, and
• control the charging process of the rechargeable power source of the device based on the determined temperature of the housing of the device.