Apparatus and method for controlling transfer of power between energy storage devices through a converter
First Claim
1. An apparatus comprising:
- a converter to be coupled between first and second energy storage devices; and
a controller to control transfer of power between the first energy storage device and the second energy storage device through the converter, wherein the first energy storage device is to supply power to a first power subsystem that is to operate in a first voltage range, the second energy storage device is to supply power to a second power subsystem that is to operate in a second voltage range, and the controller is to control the transfer of power from the first energy storage device to the second energy storage device in response to a level of the second energy storage device being below a first reference value, andthe controller is to;
determine a first difference value based on a difference between the level of the second energy storage device and the first reference value,determine a second difference value based on a difference between a level of the first energy storage device and a second reference value, andcontrol transfer of power based on the first difference value and the second difference value.
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Accused Products
Abstract
A power manager includes a converter and a controller. The converter is coupled between first and second energy storage devices, and the controller controls transfer of power between the first and second energy storage devices through the converter. The first energy storage device is to supply power to a first power subsystem of an electronic device, and the second energy storage device is to supply power to a second power subsystem of the electronic device. The subsystem may have different operating voltage requirements. When a level of the second battery falls below a first reference value, the controller controls the transfer of power from the first energy storage device to the second energy storage device. A transfer of power in a reverse direction may occur when a level of the first energy storage device falls below a second reference value.
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Citations
23 Claims
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1. An apparatus comprising:
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a converter to be coupled between first and second energy storage devices; and a controller to control transfer of power between the first energy storage device and the second energy storage device through the converter, wherein the first energy storage device is to supply power to a first power subsystem that is to operate in a first voltage range, the second energy storage device is to supply power to a second power subsystem that is to operate in a second voltage range, and the controller is to control the transfer of power from the first energy storage device to the second energy storage device in response to a level of the second energy storage device being below a first reference value, and the controller is to; determine a first difference value based on a difference between the level of the second energy storage device and the first reference value, determine a second difference value based on a difference between a level of the first energy storage device and a second reference value, and control transfer of power based on the first difference value and the second difference value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A converter comprising:
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a first node coupled to a first energy storage device; a second node coupled to a second energy storage device; and a circuit to transfer power between the first and second energy storage devices, wherein the circuit is to convert power from the first energy storage device to a form compatible for input into the second energy storage device in response to a power level of the second energy storage device being below a first reference value and wherein the circuit is to convert power from the second energy storage device to a form compatible for input into the first energy storage device in response to a power level of the first energy storage device being below a second reference value, and the circuit is to control transfer of power based on a first difference value and a second difference value, the first difference value being based on a difference between the level of the second energy storage device and the first reference value, and the second difference value being based on a difference between the level of the first energy storage device and a second reference value. - View Dependent Claims (15, 16, 17, 18, 19)
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20. An apparatus comprising:
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a controller to control transfer of power between a first energy storage device and a second energy storage device through a converter, wherein; the first energy storage device is to supply power to a first power subsystem that is to operate in a first voltage range, the second energy storage device is to supply power to a second power subsystem that is to operate in a second voltage range, and the controller is to control the transfer of power from the first energy storage device to the second energy storage device in response to a level of the second energy storage device being below a first reference value, and the controller is to; determine a first difference value based on a difference between the level of the second energy storage device and the first reference value, determine a second difference value based on a difference between a level of the first energy storage device and a second reference value, and control transfer of power based on the first difference value and the second difference value. - View Dependent Claims (21, 22, 23)
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Specification