Multiple power paths in a multi-battery information handling system
AssigneeDell Products L.P.
InventorsGeroncio O. Tan, Mohammed Hijazi, Merle J. Wood, III, Wei-Cheng Yu, Tsung-Cheng Liao
Life of this patent
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Abstract
An information handling system may have multiple batteries and be powered by any one or combination of those batteries. The multiple batteries may be in different detachable portions of the system. When the portions are attached, a battery in one unit connects through multiple input paths to provide power to the other unit. Under a heavy loading condition, power may be drawn from a first battery while power from a second battery is routed to an external power input of the information handling system to supplement power drawn from the first battery.
Claims16
A method, comprising:
- detecting a heavy loading condition of an information handling system;
- and
- when the heavy loading condition is detected:
- drawing power from a first battery of the information handling system;
- routing power from a second battery of the information handling system to an external power input terminal of the information handling system to supplement power drawn by the information handling system from the first battery;
- detecting that the information handling system is no longer under the heavy loading condition;
- disconnecting power from the first battery to the information handling system after detecting the information handling system is no longer under the heavy loading condition;
- and
- rerouting power from the second battery to a battery input terminal of the information handling system after power from the first battery has been disconnected.
An information handling system, comprising:
- a first unit, comprising:
- a display,
- a first external power input terminal,
- a first battery input terminal,
- a first battery, and
- a second unit, comprising:
- an input device,
- a second battery, and
- a controller, wherein the controller is configured to perform steps comprising:
- detecting a heavy load condition on the first unit;
- and
- when the heavy load condition is detected:
- drawing power from the first battery of the first unit;
- and
- routing power from the second battery of the second unit through the first external power input terminal of the first unit to supplement the power drawn from the first battery of the first unit;
- detecting that the first unit is no longer under the heavy loading condition;
- disconnecting power from the first battery to the first unit after detecting the first unit is no longer under the heavy loading condition;
- and
- rerouting power from the second battery to the first battery input terminal of the first unit after power from the first battery has been disconnected.
A base unit of an information handling system, comprising:
- an input device;
- a first battery;
- a first power terminal to connect the base unit to an external power input terminal of a tablet unit of the information handling system;
- a second power terminal to connect the base unit to a battery power terminal of the tablet unit of the information handling system;
- a first switch connected between the first battery and the first power terminal, wherein the first switch comprises a first Field Effect Transistor (FET), a second FET, and a first bypass diode connected in parallel to the first FET;
- a second switch connected between the first battery and the second power terminal, wherein the second switch comprises a third Field Effect Transistor (FET), a fourth FET, and a second bypass diode connected in parallel to the third FET;
- and
- a controller, wherein the controller is configured to control the first switch and the second switch to supply power from the first battery to the tablet unit of the information handling system through either the first power terminal or the second power terminal, wherein the controller is configured to perform steps comprising:
- detecting a transition condition for the first battery;
- de-activating the fourth FET of the second switch;
- activating the first FET of the first switch;
- de-activating the third FET of the second switch;
- and
- activating the second FET of the first switch.
Dependencies are inferred from the claim text.