Energy storage apparatus having a power processing unit
First Claim
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1. An apparatus comprising:
- a. an energy storage device configured to deliver electrical energy to a load, and configured to receive electrical energy from a source;
b. a power processing unit coupled to the energy storage device and comprising a first terminal and a second terminal; and
c. an energy management unit coupled to the energy storage device;
d. wherein the power processing unit is configured to regulate a voltage that corresponds to the voltage measured across the first and second terminals, the voltage being regulated to be at approximately a prescribed value despite a fluctuation in voltage across the energy storage device while electrical energy is received by the energy storage device, or while electrical energy is delivered from the energy storage device to the load; and
e. wherein the energy management unit comprises a balancing element coupled in parallel to the energy storage device for controlling the rate at which the energy storage device delivers and receives electrical energy.
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Abstract
An apparatus including an energy storage device and a power processing unit that is coupled to the energy storage device. The energy storage device is configured to deliver electrical energy to a load. The energy storage device also is configured to receive electrical energy from a source. The power processing unit is configured to control a fluctuation in voltage across the energy storage device while electrical energy is received by the energy storage device, or while electrical energy is delivered from the energy storage device to the load.
31 Citations
25 Claims
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1. An apparatus comprising:
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a. an energy storage device configured to deliver electrical energy to a load, and configured to receive electrical energy from a source; b. a power processing unit coupled to the energy storage device and comprising a first terminal and a second terminal; and c. an energy management unit coupled to the energy storage device; d. wherein the power processing unit is configured to regulate a voltage that corresponds to the voltage measured across the first and second terminals, the voltage being regulated to be at approximately a prescribed value despite a fluctuation in voltage across the energy storage device while electrical energy is received by the energy storage device, or while electrical energy is delivered from the energy storage device to the load; and e. wherein the energy management unit comprises a balancing element coupled in parallel to the energy storage device for controlling the rate at which the energy storage device delivers and receives electrical energy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus comprising:
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a. a plurality of capacitors configured to deliver electrical energy to a load, and configured to receive electrical energy from a source; b. a power processing unit coupled to the plurality of capacitors and comprising a first terminal and a second terminal; and c. an energy management unit coupled to the plurality of capacitors; d. wherein the power processing unit is configured to regulate a voltage that corresponds to the voltage measured across the first and second terminals, the voltage being regulated to be at approximately a prescribed value despite a fluctuation in voltage across the plurality of capacitors while electrical energy is received by the plurality of capacitors, or while electrical energy is delivered from the plurality of capacitors to the load; and e. wherein the energy management unit comprises a plurality of balancing elements coupled in parallel to the plurality of capacitors for maintaining approximately equal voltages across each of the plurality of capacitors. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. An apparatus comprising:
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a. an energy storage device configured to deliver electrical energy to a load, and configured to receive electrical energy from a source; and b. a power processing unit coupled to the energy storage device; c. wherein; i. the power processing unit is configured to control a fluctuation in voltage across the energy storage device while electrical energy is received by the energy storage device, or while electrical energy is delivered from the energy storage device to the load; ii. the energy storage device is a capacitor; iii. the capacitor includes a first lead and a second lead; iv. the power processing unit includes a first terminal and a second terminal; and v. the power processing unit includes a switching module comprising; an inductor having a first lead and a second lead, a first switch that is coupled between the inductor'"'"'s first lead and the capacitor'"'"'s first lead, a second switch that is coupled between the inductor'"'"'s first lead and the capacitor'"'"'s second lead, a third switch that is coupled between the inductor'"'"'s second lead and the power processing unit'"'"'s first terminal, and a fourth switch that is coupled between the inductor'"'"'s second lead and the power processing unit'"'"'s second terminal. - View Dependent Claims (22, 23, 24, 25)
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Specification