GB1437888A - - Google Patents

Info

Publication number
GB1437888A
GB1437888A GB2183974A GB2183974A GB1437888A GB 1437888 A GB1437888 A GB 1437888A GB 2183974 A GB2183974 A GB 2183974A GB 2183974 A GB2183974 A GB 2183974A GB 1437888 A GB1437888 A GB 1437888A
Authority
GB
United Kingdom
Prior art keywords
battery
voltage
pulse
fuel cell
switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2183974A
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US37120073 priority Critical patent/US3821626A/en
Priority to US00371196A priority patent/US3823358A/en
Application filed filed Critical
Publication of GB1437888A publication Critical patent/GB1437888A/en
Application status is Expired legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00Fuel cells; Manufacture thereof
    • H01M8/04Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/04537Electric variables
    • H01M8/04544Voltage
    • H01M8/04567Voltage of auxiliary devices, e.g. batteries, capacitors
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M16/00Structural combinations of different types of electrochemical generators
    • H01M16/003Structural combinations of different types of electrochemical generators of fuel cells with other electrochemical devices, e.g. capacitors, electrolysers
    • H01M16/006Structural combinations of different types of electrochemical generators of fuel cells with other electrochemical devices, e.g. capacitors, electrolysers of fuel cells with rechargeable batteries
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00Fuel cells; Manufacture thereof
    • H01M8/04Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/04537Electric variables
    • H01M8/04544Voltage
    • H01M8/04559Voltage of fuel cell stacks
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00Fuel cells; Manufacture thereof
    • H01M8/04Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298Processes for controlling fuel cells or fuel cell systems
    • H01M8/04694Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04955Shut-off or shut-down of fuel cells
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
    • H02J9/061Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over characterised by the use of electronic means
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/10Applications of fuel cells in buildings
    • Y02B90/14Emergency, uninterruptible or back-up power supplies integrating fuel cells

Abstract

1437888 Battery boosted supply systems; control of AC motors UNITED AIRCRAFT CORP 16 May 1974 [18 June 1973 (2)] 21839/74 Headings H2H and H2J A system for supplying power to a load comprises a fuel cell 10, a battery 20 connectable in parallel with the fuel cell via a switch 24 and a circuit for supplying a pulse to the switch when the voltage of the fuel cell falls below a predetermined value, the pulse causing closure of the switch to connect the battery to the load for the duration of the pulse. The load may be a motor, the high starting current of which causes a fall in the voltage of the fuel cell. This fall in voltage is detected by a comparator 32 connected to a monostable multi vibrator 38 which supplies a pulse of a pre-set duration of between one half and five seconds to the transistor switch 24 via an optical isolator 48 and an amplifier 50. The transistor is switched on for the duration of the pulse to enable the battery to provide current to an inverter 16 which supplies the load. When the battery voltage is low, a voltage controlled oscillator 60 produces pulses which turn on a thyristor 56 to enable the battery to be charged by a rectifier 54, the oscillator being switched off when the battery voltage reaches a predetermined value. When the transistor 24 is switched on to connect the battery to the inverter, the oscillator is turned off to prevent charging of the battery.
GB2183974A 1973-06-18 1974-05-16 Expired GB1437888A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US37120073 US3821626A (en) 1973-06-18 1973-06-18 Battery peaking unit for fuel cell power plants
US00371196A US3823358A (en) 1973-06-18 1973-06-18 Battery peaking unit for fuel cell power plants

Publications (1)

Publication Number Publication Date
GB1437888A true GB1437888A (en) 1976-06-03

Family

ID=27005277

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2183974A Expired GB1437888A (en) 1973-06-18 1974-05-16

Country Status (13)

Country Link
JP (1) JPS5035628A (en)
AU (1) AU475580B2 (en)
BR (1) BR7404496A (en)
CH (1) CH570061A5 (en)
DE (1) DE2424032A1 (en)
DK (1) DK320474A (en)
ES (1) ES427299A1 (en)
FR (1) FR2233735A1 (en)
GB (1) GB1437888A (en)
IN (1) IN140086B (en)
IT (1) IT1014952B (en)
NL (1) NL7404676A (en)
SE (1) SE386327B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2242082A (en) * 1990-03-12 1991-09-18 Epsilon International Limited "An uninterruptible power supply"
GB2292845A (en) * 1994-09-01 1996-03-06 Fujitsu Ltd Charging and discharging batteries
US6160377A (en) * 1997-10-20 2000-12-12 Fujitsu Limited Battery charging device and method and electronic device
GB2409925A (en) * 2004-01-08 2005-07-13 Daimler Chrysler Ag Fuel Cell System

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5750687B2 (en) * 1977-04-04 1982-10-28
DE2907516A1 (en) * 1979-02-26 1980-09-18 Teves Gmbh Alfred Floating caliper spot-type disc brake
AT2728T (en) * 1979-08-29 1983-03-15 Fried. Krupp Gesellschaft Mit Beschraenkter Haftung Means for supply of nutzverbrauchern, in particular in a rail vehicle.
WO1999056161A1 (en) 1998-04-27 1999-11-04 Hamamatsu Photonics K.K. Optical part and manufacturing method thereof
DE102007035217B4 (en) * 2007-07-25 2011-05-26 Futuree Fuel Cell Solutions Gmbh Energy supply system and method for its operation

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2242082A (en) * 1990-03-12 1991-09-18 Epsilon International Limited "An uninterruptible power supply"
GB2292845A (en) * 1994-09-01 1996-03-06 Fujitsu Ltd Charging and discharging batteries
US5801514A (en) * 1994-09-01 1998-09-01 Fujitsu Limited Charging-and-discharging control device, a battery pack, and an electronic apparatus with improved charge and discarge control
US5808444A (en) * 1994-09-01 1998-09-15 Fujitsu Limited Charging-and-discharging device, battery pack and electronic apparatus including them
GB2292845B (en) * 1994-09-01 1999-02-10 Fujitsu Ltd Electronic apparatus
US5905361A (en) * 1994-09-01 1999-05-18 Fujitsu Limited Charging-and-discharging device, constant-voltage and constant-current control circuit, and electronic device
US6008629A (en) * 1994-09-01 1999-12-28 Fujitsu Limited Charging-and-discharging device for an electronic apparatus, and an electronic apparatus including the same, utilizing a charging device providing a constant charging current
US6160377A (en) * 1997-10-20 2000-12-12 Fujitsu Limited Battery charging device and method and electronic device
GB2409925A (en) * 2004-01-08 2005-07-13 Daimler Chrysler Ag Fuel Cell System
GB2409925B (en) * 2004-01-08 2006-01-25 Daimler Chrysler Ag Fuel cell system
US7514164B2 (en) 2004-01-08 2009-04-07 Daimler Ag Fuel cell system including a fuel cell stack and at least one electrical energy storage device

Also Published As

Publication number Publication date
IN140086B (en) 1976-09-11
IT1014952B (en) 1977-04-30
JPS5035628A (en) 1975-04-04
NL7404676A (en) 1974-12-20
DE2424032A1 (en) 1975-01-09
CH570061A5 (en) 1975-11-28
BR7404496A (en) 1976-02-17
FR2233735A1 (en) 1975-01-10
AU475580B2 (en) 1976-08-26
AU6733774A (en) 1975-10-02
DK320474A (en) 1975-02-17
SE386327B (en) 1976-08-02
ES427299A1 (en) 1976-07-01

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee