US Patent No: 7,834,587

Number of patents in Portfolio can not be more than 2000

Non-isolated charger with bi-polar inputs

ALSO PUBLISHED AS: 20100270977

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Importance

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Abstract

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Systems and methods are provided for an uninterruptable power supply having a positive DC bus, a neutral DC bus, and a negative DC bus. The uninterruptible power supply includes a battery charger circuit having an inductor, a first charger output, and a second charger output. A first switch connected to a first end of the inductor is configured to couple the positive DC bus with the first charger output. A second switch connected to a second end of the inductor is configured to couple the negative DC bus with the inductor. The neutral DC bus can be coupled to the second charger output. The battery charger circuit can be configured to draw power from at to least one of the positive DC bus and the negative DC bus to charge a battery coupled to the first charger output and the second charger output.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
AMERICAN POWER CONVERSION CORPORATIONWEST KINGSTON, RI300

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Samstad, Jeffrey B Brookline, MA 16 107

Cited Art Landscape

Patent Info (Count) # Cites Year
 
AMERICAN POWER CONVERSION CORPORATION (16)
6,274,950 Battery communication system 62 1994
6,803,678 Battery communication system 41 2001
6,983,212 Battery management system and method 57 2002
2005/0029,984 Battery exchange apparatus and method for uninterruptible power supply 12 2003
2005/0036,248 Uninterruptible power supply 53 2003
2005/0162,129 Method and apparatus for monitoring energy storage devices 41 2004
7,432,615 Uninterruptable power supply system and method 18 2004
7,456,518 Method and apparatus for providing uninterruptible power 17 2004
7,199,489 Battery communication system 13 2005
2007/0064,363 Apparatus for and method of UPS operation 23 2005
7,456,524 Apparatus for and methods of polyphase power conversion 13 2006
7,301,249 Battery connect/disconnect for an uninterruptible power supply 13 2006
2008/0061,628 Method and apparatus for providing uninterruptible power 15 2006
2008/0042,491 UNINTERRUPTIBLE POWER SUPPLY 14 2007
2009/0033,283 ADJUSTABLE BATTERY CHARGER FOR UPS 3 2007
2009/0231,892 UNINTERRUPTIBLE POWER SUPPLY 8 2009
 
EATON POWER QUALITY CORPORATION (3)
6,069,412 Power factor corrected UPS with improved connection of battery to neutral 42 1993
6,400,586 Power factor corrected UPS with improved connection of battery to neutral 13 2001
6,661,678 Power factor corrected UPS with improved connection of battery to neutral and methods of operation thereof 22 2002
 
GENERAL SIGNAL POWER SYSTEMS, INC. (3)
5,315,533 Back-up uninterruptible power system 131 1991
5,302,858 Method and apparatus for providing battery charging in a backup power system 51 1991
5,619,076 Method and apparatus for connection and disconnection of batteries to uninterruptible power systems and the like 32 1994
 
Power-Tech Systems Corporation (2)
4,843,299 Universal battery charging system and a method 72 1987
5,049,804 Universal battery charging system and a method 86 1988
 
SCHNEIDER ELECTRIC IT CORPORATION (2)
7,446,433 Methods and apparatus for providing uninterruptible power 17 2004
2009/0251,002 APPARATUS, SYSTEM AND METHOD FOR A UPS 8 2008
 
Span, Inc. (2)
4,746,854 Battery charging system with microprocessor control of voltage and current monitoring and control operations 65 1986
4,918,368 System for charging batteries and measuring capacities and efficiencies thereof 54 1988
 
ANTON/BAUER, INC. (1)
4,965,738 Intelligent battery system 163 1988
 
AT&T Bell Laboratories (1)
5,266,880 Battery monitoring circuit 141 1992
 
BAE SYSTEMS PLC (1)
4,949,046 Battery state of charge indicator 139 1988
 
C&D CHARTER HOLDINGS, INC. (1)
5,281,955 Battery charge monitoring apparatus and method 37 1991
 
DELL PRODUCTS L.P. (1)
6,928,568 Battery charger current limiting based on maximum current capacity of AC adapter as determined by adapter identification subsystem 16 2002
 
DELTA ELECTRONICS, INC. (1)
2007/0262,650 UNINTERRUPTIBLE POWER SUPPLY WITH LOW POWER LOSS 4 2007
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (1)
5,289,046 Power converter with controller for switching between primary and battery power sources 48 1992
 
Hughes Aircraft Company (1)
5,498,950 Battery monitoring, charging and balancing apparatus 104 1994
 
Kabushiki Kaisha Shinsangyokaihatsu (1)
4,947,123 Battery state monitoring apparatus 81 1988
 
KABUSHIKI KAISHA TOSHIBA (1)
5,148,043 Uninterruptible power supply diagnosing remaining battery capacity during normal external power source operation 63 1990
 
LUCAS INDUSTRIES LIMITED (1)
4,394,741 Battery monitoring system 45 1980
 
LUCENT TECHNOLOGIES INC. (1)
5,969,436 Connect/disconnect circuit for a reserve battery and method of operation thereof 24 1998
 
POWERWARE CORPORATION (1)
5,457,377 Method of monitoring the internal impedance of an accumulator battery in an uninterruptible power supply, and an uninterruptible power supply 174 1993
 
SIEMENS AKTIENGESELLSCHAFT (1)
5,218,288 Method and apparatus for monitoring the operational state and stand-by of a battery 32 1991
 
TEXAS INSTRUMENTS INCORPORATED (1)
6,268,711 Battery manager 61 2000
 
Other [Check patent profile for assignment information] (6)
4,217,645 Battery monitoring system 167 1979
4,820,966 Battery monitoring system 183 1988
5,047,961 Automatic battery monitoring system 99 1990
2001/0009,361 Method for monitoring operating parameters of a rechargeable power supply 20 2001
2006/0012,341 Battery management system and method 12 2005
2008/0157,602 BATTERY CONNECT/DISCONNECT FOR AN UNINTERRUPTIBLE POWER SUPPLY 7 2007

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