Apparatus for powering a battery of an audio system

1 . An apparatus configured to power a battery of an audio system, the apparatus comprising:

a plurality of switches, wherein the plurality of switches comprises a power switch and a plurality of voltage regulator switches;

a microcontroller; and

a voltage regulator circuit, wherein the microcontroller is configured to:

determine whether the power switch is activated;

 in response to determining the power switch is activated, activate the plurality of voltage regulator switches to electrically couple the voltage regulator circuit to the battery; and

initiate a power-off routine; and

a delay circuit that is configured to deactivate the voltage regulator switches in response to the power-off routine not being successfully completed.

2 . The apparatus of claim 1 , wherein the microcontroller is configured to perform a power-off routine, wherein during the power-off routine, the microcontroller is configured to:

determine whether a power-off command has been received when the voltage regulator circuit is electrically coupled to the battery; and

broadcast a command to deactivate the plurality of voltage regulator switches in response to the power-off command being received when the voltage regulator circuit is electrically coupled to the battery.

3 . The apparatus of claim 1 , wherein the plurality of switches further comprises an audio system state switch, and wherein the microcontroller is configured to determine whether the power switch is activated based on a state of the audio system state switch.

4 . The apparatus of claim 1 further comprising a charging circuit configured to provide the power to the battery based on a charging control routine performed by the microcontroller.

5 . The apparatus of claim 4 further comprising one or more negative temperature coefficient (NTC) thermistors, wherein the one or more NTC thermistors are electrically coupled to the battery and are configured to generate resistance data that is indicative of a temperature of the battery.

6 . The apparatus of claim 5 , wherein the charging control routine is based on the resistance data.

7 . The apparatus of claim 5 , wherein:

the plurality of switches includes a charging circuit switch that electrically couples an external power supply to the charging circuit and the battery; and

to perform the charging control routine, one of the microcontroller and the charging circuit is configured to:

determine the temperature of the battery based on the resistance data;

determine whether the temperature of the battery is less than a minimum threshold temperature or greater than a maximum threshold temperature; and

deactivate the charging circuit switch in response to the temperature being less than the minimum threshold temperature or greater than the maximum threshold temperature.

8 . The apparatus of claim 4 further comprising an overvoltage protection circuit, wherein:

the plurality of switches includes a charging circuit switch that electrically couples an external power supply to the charging circuit and the battery; and

the overvoltage protection circuit is electrically coupled to the charging circuit switch and the plurality of voltage regulator switches.

9 . The apparatus of claim 4 further comprising an overcurrent protection circuit, wherein:

the plurality of switches includes a charging circuit switch that electrically couples an external power supply to the charging circuit and the battery; and

the overcurrent protection circuit is electrically coupled to the charging circuit switch and the plurality of voltage regulator switches.

10 . An apparatus configured to power a battery of an audio system, the apparatus comprising:

a plurality of switches, wherein the plurality of switches comprises a power switch, a plurality of voltage regulator switches, and a charging circuit switch;

a microcontroller;

a charging circuit configured to provide the power to the battery based on a charging control routine performed by the microcontroller; and

a voltage regulator circuit, wherein the microcontroller is configured to:

determine whether the power switch is activated;

in response to determining the power switch is activated, activate the plurality of voltage regulator switches to electrically couple the voltage regulator circuit to the battery;

obtain resistance data indicative of a temperature of the battery;

perform the charging control routine based on the resistance data; and

initiate a power-off routine; and

a delay circuit that is configured to deactivate the voltage regulator switches in response to the power-off routine not being successfully completed.

11 . The apparatus of claim 10 , wherein the microcontroller is configured to perform a power-off routine, wherein during the power-off routine, the microcontroller is configured to:

determine whether a power-off command has been received when the voltage regulator circuit is electrically coupled to the battery; and

broadcast a command to deactivate the plurality of voltage regulator switches in response to the power-off command being received when the voltage regulator circuit is electrically coupled to the battery.

12 . The apparatus of claim 10 , wherein the plurality of switches further comprises an audio system state switch, and wherein the microcontroller is configured to determine whether the power switch is activated based on a state of the audio system state switch.

13 . The apparatus of claim 10 further comprising one or more negative temperature coefficient (NTC) thermistors, wherein the one or more NTC thermistors are electrically coupled to the battery and are configured to generate resistance data that is indicative of a temperature of the battery.

14 . The apparatus of claim 13 , wherein:

the charging circuit switch electrically couples an external power supply to the charging circuit and the battery; and

to perform the charging control routine, one of the microcontroller and the charging circuit is configured to:

determine the temperature of the battery based on the resistance data;

determine whether the temperature of the battery less than a minimum threshold temperature or greater than a maximum threshold temperature; and

deactivate the charging circuit switch in response to the temperature being less than the minimum threshold temperature or greater than the maximum threshold temperature.

15 . The apparatus of claim 10 further comprising an overvoltage protection circuit, wherein:

the plurality of switches includes a charging circuit switch that electrically couples an external power supply to the charging circuit and the battery; and

the overvoltage protection circuit is electrically coupled to the charging circuit switch and the plurality of voltage regulator switches.

16 . The apparatus of claim 10 further comprising an overcurrent protection circuit, wherein:

the plurality of switches includes a charging circuit switch that electrically couples an external power supply to the charging circuit and the battery; and

the overcurrent protection circuit is electrically coupled to the charging circuit switch and the plurality of voltage regulator switches.

17 . A method for controlling an apparatus to power a battery of an audio system, the apparatus comprising plurality of switches, a microcontroller, a delay circuit, and a voltage regulator circuit, wherein the plurality of switches comprises a power switch and a plurality of voltage regulator switches, the method comprising:

determining, by the microcontroller, whether the power switch is activated;

in response to determining the power switch is activated, activating, by the microcontroller, the plurality of voltage regulator switches to electrically couple the voltage regulator circuit to the battery;

deactivating, by the microcontroller, the power switch in response to electrically coupling the voltage regulator circuit to the battery;

broadcasting, by the microcontroller, a command to deactivate the plurality of voltage regulator switches in response to the power switch being deactivated;

determining, by the microcontroller, whether the plurality of voltage regulator switches are deactivated in response to broadcasting the command; and

deactivating, by the delay circuit, the voltage regulator switches in response to determining the plurality of voltage regulator switches are not deactivated.