WO2005011045A1 - Adapter and hybrid power supply for electronic devices - Google Patents
Adapter and hybrid power supply for electronic devices Download PDFInfo
- Publication number
- WO2005011045A1 WO2005011045A1 PCT/US2004/020188 US2004020188W WO2005011045A1 WO 2005011045 A1 WO2005011045 A1 WO 2005011045A1 US 2004020188 W US2004020188 W US 2004020188W WO 2005011045 A1 WO2005011045 A1 WO 2005011045A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel cell
- battery
- adapter
- power supply
- fuel
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
- H01M8/04208—Cartridges, cryogenic media or cryogenic reservoirs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M16/00—Structural combinations of different types of electrochemical generators
- H01M16/003—Structural combinations of different types of electrochemical generators of fuel cells with other electrochemical devices, e.g. capacitors, electrolysers
- H01M16/006—Structural combinations of different types of electrochemical generators of fuel cells with other electrochemical devices, e.g. capacitors, electrolysers of fuel cells with rechargeable batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/30—Fuel cells in portable systems, e.g. mobile phone, laptop
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes 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
- H01M8/04537—Electric variables
- H01M8/04544—Voltage
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes 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
- H01M8/04537—Electric variables
- H01M8/04574—Current
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04858—Electric variables
- H01M8/04925—Power, energy, capacity or load
- H01M8/04947—Power, energy, capacity or load of auxiliary devices, e.g. batteries, capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04955—Shut-off or shut-down of fuel cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1007—Fuel cells with solid electrolytes with both reactants being gaseous or vaporised
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1009—Fuel cells with solid electrolytes with one of the reactants being liquid, solid or liquid-charged
- H01M8/1011—Direct alcohol fuel cells [DAFC], e.g. direct methanol fuel cells [DMFC]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/30—The power source being a fuel cell
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/10—Applications of fuel cells in buildings
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Definitions
- FIG. 1 is a block diagram.
- FIGS. 2 A and 2B are perspective diagrammatical views of an interconnect structure for coupling to a fuel cell and device electronics.
- FIGS. 3 and 4 are perspective, diagrammatical views depicting exemplary arrangements for batteries and fuel cartridges.
- FIGS. 5 and 6 are schematic diagrams of electronic circuits for a fuel cell based hybrid DC power supply.
- FIG. 7 is a schematic diagram of a control circuit for the hybrid DC power supply.
- FIG. 8 is a schematic diagram of an alternate control circuit for the hybrid DC power supply.
- two small metal plates could be located on a fuel cartridge where the battery terminals would be in a prismatic batteiy or in the contact receptacles 44 in the fuel cartridge 38 (if used). These terminals could be short-circuited. If a circuit connected to the batteiy terminal prongs detects no voltage across the terminals but only a small resistance, the circuit could initiate a mechanism to mechanical dock the interface with an inserted fuel cartridge.
- a silicon diode 50 is shown coupled between a fuel cell 22 and external battery terminals that can receive a battery (not shown). The terminals can also receive a AC or DC adapter discussed below.
- the biasing circuit 132 for the converter 59 includes an inductor L t (e.g., 6.8 uh) coupled across the converter 59, which is optimized to improve conversion efficiency.
- the input voltage range of the step-up (boost) DC/DC converter 59 in this example is from 0.7 to 5.5V.
- the output voltage is adjustable via two external resistors, Ri and R 2 .
- the output voltage is adjusted on the feedback input (FB) of the converter 12 to equal an internal voltage reference (e.g., 1.25V), when the output voltage is 4V on output (Vout).
- the output voltage should remain higher than the input voltage for the converter 59 to operate normally.
- the circuit 14 could be an ASIC, incorporating most of the external components (probably except the inductor LI and the current sensing resistor, which can be used to program externally the primary current for the specific application).
- the capacitors C C 2 and C 3 are used to filter switching pulses at the input and output of the converter 59 and prevent oscillations.
- C4 is used for "soft start" of the converter and to improve stability.
- the circuit 130 has primary current sensor/amplifier with power shutdown section 134 including an operational amplifier U2 having resistors R 4 and R 5 to provide a primary current sensing resistor.
- a protection circuit, cutting off at 2.4V is incorporated in the battery to prevent degradation of the Li-ion cell. If the circuit is designed such that the load (device) cuts off at 3.2 V, and the input load voltage will never exceed 3.3V (2 to 4 fuel cells in series). It is possible to design a hybrid power supply using higher input than output voltage by replacing the step-up (boost) converter with a step-down (buck) DC/DC converter. This is less desirable because multiple cells in series have lower energy density than one or two large cells with the same volume. Cell voltage balancing can be a problem with the multiple cells in series and could be more difficult and expensive to refuel. For fuel cells applications, 8-20 cells would be needed for the step-down variation. Referring to FIG.
- the circuit 160 includes bias and control circuits for the DC-DC converter 14, a primary current sense comparator 164 and a charge cutoff comparator 66, connected to a power shutdown circuit 162. In addition, fuse protection 168 is supplied.
- the circuit 160 is configured to draw a constant amount of current from the fuel cell such that the fuel cell can operate at its optimum operating point. In operation, the fuel cell delivers a constant current to the DC/DC converter 59.
- the output of the DC/DC converter 59 is connected to the rechargeable cell, which is either used to recharge the cell or deliver power to the load device 18.
- the step-up (boost) DC/DC converter 59 can be for example, the LTC 3400 (U from Linear Technology.
- the very low (25 mV average) IR drop is compared to a reference voltage (produced by the reference voltage source D2 and the voltage divider R 19 /R 13 ) by the operational amplifier U 2 , whose output will go high and cut off the converter, when the primary current exceeds the preset limit.
- the resistor R 20 and the capacitor C 16 connected in the negative feedback loop of the operational amplifier U5-A, form an integrator to introduce a delay and thus stabilize the comparator's response.
- the diode O l prevents interference between the voltage control and the current control circuits.
- the output voltage signal, coming through R ⁇ , and the input current signal, coming through the diode Dl are summed at the converter's feedback input, without interference in-between, on a "largest-only" basis, and compared to the internal reference voltage.
- the system reacts to whichever of the signals first reaches 1.25V, and stops the converter 59 switching, thus reducing the output voltage.
- the Li-ion cell is connected to the output of the DC/DC converter 59 through the MOS FET (metal oxide semiconductor field effect transistor) switch Q u .
- MOS FET metal oxide semiconductor field effect transistor
- the shutdown control circuit 166 prevents discharge (several milliamps) of the Li-ion cell through the output of the DC/DC converter 59, when the fuel cell during discharge reaches the cutoff voltage on the DC/DC converter input side (in this example 1.4 V for four to six fuel cells in series). It could also be used to tune the system primary cutoff voltage to a desired level for the selected fuel cell type.
- the shutdown circuit 66 via Q n cuts off before the converter input cutoff voltage is reached.
- MOSFET Q u is biased through the output of an Op Amp U5-B that is used as a comparator to sense, via resistor R 24 , when the input voltage to the DC-DC converter 12 is below a certain threshold.
- the threshold voltage is determined by resistors R 17 , R 23 , and Zener diode D2.
- hysteresis is introduced by the use of R lg in the U5-B negative feedback loop. If V is 1.40 volts or less, the converter is shut down through the inverter circuit 162, formed by the transistor Q 12 , and the charge is cut off via Q n , preventing discharge of the Li-ion cell through the converter output. If V is 1.45 volts or more, the DC/DC converter is "on” and the circuit is charging. A signal “Replace fuel caitridge" is asserted when the input voltage is below 1.4V and is used to drive Q u and Q 12 .
- the Li- ion battery 16 has a fuse circuit 168 with fuse (F,) in series with both the charge path and the output, used for safety, to permanently open in case of a short-circuit condition.
- the hybrid power supply 171 includes a switching type DC/DC boost type converter 174 that receives energy from a primary cell 172 and delivers the energy to a secondary, e.g., rechargeable cell 176.
- the primary cell 172 is a fuel cell and has a fuel cartridge (not shown) that supplies a source of fuel (a form of hydrogen) to the fuel cell 172.
- the rechargeable cell 176 delivers power, as needed, to the device 178.
- the device 178 can be any type of electronic device, especially a portable device such as a wireless device, e.g., a cell phone, personal digital assistant, digital camera, and so forth.
- the switching type DC/DC boost type converter 172 is configured to provide a fixed output voltage that is less than the charging voltage of the rechargeable cell 176, and is current limited to a portion of the charging current of the rechargeable cell. In this configuration, the switching type DC/DC boost type converter 172 acts also as a charger for the rechargeable cell 176.
- the rechargeable cell 176 can be a rechargeable Li-Ion type. Preferred examples include a Li-Ion or Li-Polymer rechargeable cell.
- Integrated interconnect/ charger adapter 184 connects directly to the interconnect 20 and includes battery terminals 181a, 181b to connect to terminals 34a, 34b and an aperture 181c that receives the end of the ingress port 32 of the interconnect 20.
- Integrated interconnect/charger adapter 184 also includes necessary electronics (not shown) that converts AC voltage to a proper rated output DC voltage at terminals 91a, 91b and thus delivers DC power to the external battery terminals 34a, 34b of the interconnect 20. This power is used to charge the rechargeable battery of the hybrid system embedded in the device 78. Referring to FIG.
- the plug and the adapter 184 or 184' can be configured and designed to convert DC power to a proper output DC power level. Alternatively, in some DC arrangements no conversion to a lower or higher voltage is needed since the arrangements of FIGS.5-8 could be used. In this way, when an AC or car battery power is available, the cost of a fuel cartridge or batteries could be saved.
- the external adapter does not need to provide the maximum device power, just low -rate charging power similar to the external battery.
- Wire pairs can be power cords that are permanently affixed to their respectively connected bodies or can be connected via appropriate plugs, or connectors (not shown)
- circuit of FIG. 5 or FIG. 6 while described as being within the interconnect 20 could be located outside of the interconnect as a stand-alone circuit or as part of the electronic circuits that provide the operational functionality of the device. Accordingly, other embodiments are within the scope of the following claims.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006518676A JP2007527598A (en) | 2003-07-09 | 2004-06-23 | Electronic device adapter and hybrid power supply |
BRPI0412147-3A BRPI0412147A (en) | 2003-07-09 | 2004-06-23 | hybrid power adapter and power supply |
EP04755976A EP1645008A1 (en) | 2003-07-09 | 2004-06-23 | Adapter and hybrid power supply for electronic devices |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/616,495 US7482091B2 (en) | 2003-07-09 | 2003-07-09 | Fuel cartridge interconnect for portable fuel cells |
US10/616,495 | 2003-07-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005011045A1 true WO2005011045A1 (en) | 2005-02-03 |
Family
ID=33564771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2004/020188 WO2005011045A1 (en) | 2003-07-09 | 2004-06-23 | Adapter and hybrid power supply for electronic devices |
Country Status (6)
Country | Link |
---|---|
US (2) | US7482091B2 (en) |
EP (1) | EP1645008A1 (en) |
JP (1) | JP2007527598A (en) |
CN (1) | CN100423358C (en) |
BR (1) | BRPI0412147A (en) |
WO (1) | WO2005011045A1 (en) |
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US20040253500A1 (en) * | 2003-06-13 | 2004-12-16 | Bourilkov Jordan T. | Fuel cartridge interconnect for portable fuel cells |
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2003
- 2003-07-09 US US10/616,495 patent/US7482091B2/en not_active Expired - Fee Related
-
2004
- 2004-06-23 BR BRPI0412147-3A patent/BRPI0412147A/en not_active IP Right Cessation
- 2004-06-23 JP JP2006518676A patent/JP2007527598A/en active Pending
- 2004-06-23 CN CNB2004800195733A patent/CN100423358C/en not_active Expired - Fee Related
- 2004-06-23 EP EP04755976A patent/EP1645008A1/en not_active Withdrawn
- 2004-06-23 WO PCT/US2004/020188 patent/WO2005011045A1/en active Application Filing
-
2009
- 2009-01-23 US US12/358,320 patent/US7862926B2/en not_active Expired - Fee Related
Patent Citations (1)
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US6104162A (en) * | 1999-09-11 | 2000-08-15 | Sainsbury; Simon R. | Method and apparatus for multi-power source for power tools |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008072308A1 (en) * | 2006-12-12 | 2008-06-19 | Pioneer Corporation | Connector device |
GB2487924A (en) * | 2011-02-08 | 2012-08-15 | Intelligent Energy Ltd | Mains power adaptor incorporating a fuel cell |
GB2487924B (en) * | 2011-02-08 | 2013-06-12 | Intelligent Energy Ltd | Fuel cell adaptor |
US9455573B2 (en) | 2011-02-08 | 2016-09-27 | Intelligent Energy Limited | Mains power adaptor comprising a fuel cell |
Also Published As
Publication number | Publication date |
---|---|
US20050008903A1 (en) | 2005-01-13 |
US20090128088A1 (en) | 2009-05-21 |
CN100423358C (en) | 2008-10-01 |
EP1645008A1 (en) | 2006-04-12 |
BRPI0412147A (en) | 2006-08-22 |
JP2007527598A (en) | 2007-09-27 |
US7862926B2 (en) | 2011-01-04 |
US7482091B2 (en) | 2009-01-27 |
CN1820389A (en) | 2006-08-16 |
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