Energy Storage System

• US 20090278498A1
• Filed: 05/07/2008
• Published: 11/12/2009
• Est. Priority Date: 05/07/2008
• Status: Active Grant

• Current Assignee: Northern Lights Semiconductor Corp.
• Original Assignee: Northern Lights Semiconductor Corp.
• Inventors: Lai, James Chyi, Fong, Kai Chun
• Granted Patent: US 7,911,187 B2
• Time in Patent Office: Days
• US Class Current: 320/128
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

Abstract

An energy storage system includes a battery charger and energy storage devices. The battery charger is connected to a DC/AC current source. The energy storage devices are coupled between the battery charger and subsystems respectively. Each of the energy storage devices includes a magnetic capacitor (MCAP) and an over current protection device (OCPD). MCAPs are charged by the battery charger and supply the electric power to subsystems connected the energy storage devices. OCPDs detect current from MCAPs to subsystems and protect subsystems from excessive currents of voltages.

Claims

1. An energy storage system comprising:

a battery charger connected to a DC/AC current source; and

a plurality of energy storage devices coupled between the battery charger and a plurality of subsystems respectively, each of the energy storage devices comprising;

a magnetic capacitor (MCAP) which is charged by the battery charger and supplies the electric power to a subsystem connected an energy storage device; and

an over current protection device (OCPD) detecting current from the MCAP to a subsystem and protecting the subsystem from excessive currents of voltages.

2. The energy storage system of claim 1, wherein when the DC/AC current source supplies DC current, the MCAP is a battery.

3. The energy storage system of claim 1, wherein when the DC/AC current source supplies AC current, the MCAP is an ultra-capacitor.

4. The energy storage system of claim 1, further comprising an optional energy storage device coupled to the battery charger, the optional energy storage device comprising a main magnetic capacitor and a MCAP protector.

5. The energy storage system of claim 1, wherein the MCAP is mounted on the subsystem printed circuit board (PCB).

6. The energy storage system of claim 1, wherein the MCAP is packaged in System-in-a-Package (SiP).

7. An energy storage system comprising:

a battery charger connected to a DC/AC current source;

an main energy storage device coupled to the battery charger, the main energy storage device comprising a main magnetic capacitor and a MCAP protector; and

a plurality of energy storage devices coupled between the battery charger and a plurality of subsystems respectively, each of the energy storage devices comprising;

a magnetic capacitor (MCAP) which is charged by the battery charger and supplies the electric power to a subsystem connected an energy storage device; and

an over current protection device (OCPD) detecting current from the MCAP to a subsystem and protecting the subsystem from excessive currents of voltages.

8. The energy storage system of claim 7, wherein when the DC/AC current source supplies DC current, the MCAP is a battery.

9. The energy storage system of claim 7, wherein when the DC/AC current source supplies AC current, the MCAP is an ultra-capacitor.

10. The energy storage system of claim 7, wherein the MCAP is mounted on the subsystem printed circuit board (PCB).

11. The energy storage system of claim 7, wherein the MCAP is packaged in System-in-a-Package (SiP).