US 11,721,996 B2
Intelligent power supply device and voltage control method thereof
Han-Tse Lee, New Taipei (TW)
Assigned to ESH TECHNOLOGY CO., LTD., New Taipei (TW)
Filed by ESH Technology CO., LTD., New Taipei (TW)
Filed on Dec. 6, 2019, as Appl. No. 16/706,475.
Claims priority of application No. 108200012 (TW), filed on Jan. 2, 2019.
Prior Publication US 2020/0212699 A1, Jul. 2, 2020
Int. Cl. H02J 1/10 (2006.01); H02J 7/00 (2006.01); H02J 7/34 (2006.01); H02J 13/00 (2006.01)
CPC H02J 7/0068 (2013.01) [H02J 7/0031 (2013.01); H02J 7/0047 (2013.01); H02J 7/00302 (2020.01); H02J 7/00306 (2020.01); H02J 7/34 (2013.01); H02J 13/00001 (2020.01); H02J 13/00006 (2020.01)] 13 Claims
OG exemplary drawing
 
1. An intelligent power supply device, comprising:
a battery operable between a charge mode and a discharge mode, and providing a direct current (DC) discharge voltage when operating in the discharge mode;
a DC power bus coupled to the battery for receiving the DC discharge voltage therefrom;
a communication circuit adapted to wirelessly receive from a portable device, a setting command that indicates a voltage setting value;
a processor unit coupled to the communication circuit for receiving the setting command therefrom, generating a control signal, and adjusting the control signal based on at least the voltage setting value indicated by the setting command;
a voltage control unit coupled to the DC power bus and the processor unit for receiving the DC discharge voltage and the control signal respectively therefrom, and converting the DC discharge voltage into a DC output voltage having a magnitude at the voltage setting value based on the control signal;
a first output connector which is coupled to the voltage control unit, and at which the DC output voltage is outputted;
a DC input unit coupled to the DC power bus, for receiving a DC input voltage, and providing a DC charge voltage to the DC power bus based on the DC input voltage; and
a battery protection unit coupled between the battery and the DC power bus, detecting, when the battery operates in the discharge mode, a magnitude of the DC discharge voltage and a magnitude of a discharge current provided by the battery, and detecting, when the battery operates in the charge mode, a magnitude of the DC charge voltage and a magnitude of a charge current received by the battery,
wherein:
the battery receiving the DC charge voltage from the DC power bus when operating in the charge mode,
the battery protection unit establishing connection between the battery and the DC power bus when each of the magnitudes of the DC discharge voltage, the discharge current, the DC charge voltage and the charge current is smaller than or equal to a respective predetermined value, and
the battery protection unit breaking the connection between the battery and the DC power bus when it determines that at least one of the magnitudes of the DC discharge voltage, the discharge current, the DC charge voltage and the charge current exceeds the respective predetermined value.