Low cost electronic ultracapacitor interface technique to provide load leveling of a battery for pulsed load or motor traction drive applications

Patent · Thu Jan 01 00:00:00 EST 1998

OSTI ID:871401

King, Robert Dean ^[1]

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1. Schenectady, NY

A battery load leveling arrangement for an electrically powered system in which battery loading is subject to intermittent high current loading utilizes a passive energy storage device and a diode connected in series with the storage device to conduct current from the storage device to the load when current demand forces a drop in battery voltage. A current limiting circuit is connected in parallel with the diode for recharging the passive energy storage device. The current limiting circuit functions to limit the average magnitude of recharge current supplied to the storage device. Various forms of current limiting circuits are disclosed, including a PTC resistor coupled in parallel with a fixed resistor. The current limit circuit may also include an SCR for switching regenerative braking current to the device when the system is connected to power an electric motor.

• Research Organization: EG & G IDAHO INC
• DOE Contract Number: AC07-76ID01570
• Assignee: General Electric Company (Schenectady, NY)
• Patent Number(s): US 5723956
• OSTI ID: 871401
• Country of Publication: United States
• Language: English

Related Subjects

cost
electronic
ultracapacitor
interface
technique
provide
load
leveling
battery
pulsed
motor
traction
drive
applications
arrangement
electrically
powered
loading
subject
intermittent
current
utilizes
passive
energy
storage
device
diode
connected
series
conduct
demand
forces
drop
voltage
limiting
circuit
parallel
recharging
functions
limit
average
magnitude
recharge
supplied
various
forms
circuits
disclosed
including
ptc
resistor
coupled
fixed
switching
regenerative
braking
power
electric
load leveling
battery voltage
electrically powered
traction drive
regenerative braking
storage device
electric motor
energy storage
current limiting
various forms
circuit functions
current supplied
charge current
diode connected
current load
current limit
cost electronic
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