# US 8,785,076 B2 · Portable fuel cell systems and methods therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,785,076 B2 - Document ID: US8785076B2 - Status: Granted - Kind: B2 - Application number: 13/527,271 - Filed: 2012-06-19 - Published: 2012-12-20 - Granted: 2014-07-22 - Earliest claimed: 2006-01-09 - Assignees: Societe BIC - Applicants: Gerard F. McLean; Jeremy Schrooten; Joerg Zimmermann; Mark Petersen; Paul Sobejko - Inventors: Gerard F. McLean; Jeremy Schrooten; Joerg Zimmermann; Mark Petersen; Paul Sobejko - Web page: https://patentgrep.com/patent/US8785076B2 ## CPC - H01M 8/04208: {Cartridges, cryogenic media or cryogenic reservoirs} - H01M 8/0271: Sealing or supporting means around electrodes, matrices or membranes - H01M 8/04089: of gaseous reactants - H01M 8/04216: {characterised by the choice for a specific material, e.g. carbon, hydride, absorbent} - H01M 8/2465: Details of groupings of fuel cells - H01M 8/2475: Enclosures, casings or containers of fuel cell stacks - H01M 16/006: {of fuel cells with rechargeable batteries} - H10W 40/25: characterised by their materials - H10W 40/77: Auxiliary members characterised by their shape - H01M 8/04753: {of fuel cell reactants} - H01M 8/065: by dissolution of metals or alloys; by dehydriding metallic substances - H01M 2250/30: Fuel cells in portable systems, e.g. mobile phone, laptop - Y02B 90/10: Applications of fuel cells in buildings - Y02E 60/10: Energy storage using batteries - Y02E 60/50: Fuel cells - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A fuel cell system including, among other things, one or more of a fuel cell, a fuel reservoir, a current collecting circuit, a plenum, or a system cover. The fuel reservoir is configured to store fuel, and may include a regulator for controlling an output fuel pressure and a refueling port. A surface of the fuel reservoir may be positioned adjacent a first fuel cell portion. The current collecting circuit is configured to receive and distribute fuel cell power and may be positioned adjacent a second fuel cell portion. The plenum may be formed when the fuel reservoir and the first fuel cell portion are coupled or by one or more flexible fuel cell walls. The system cover allows air into the system and when combined when a fuel pressure in the plenum, may urge contact between the fuel cell and the current collecting circuit. ## Claims ### Claim 1 A fuel cell system comprising: a fuel reservoir configured to store a fuel therein; a fuel cell layer in fluidic contact with the fuel reservoir, the fuel cell layer including a flexible wall; and a fuel plenum formed between the fuel reservoir and the fuel cell layer; wherein the fuel cell layer is configured to move when the fuel plenum is pressurized with the fuel. ### Claim 2 (depends on 1) The fuel cell system of claim 1, further comprising a system cover configured to at least partially surround the fuel cell layer. ### Claim 3 (depends on 2) The fuel cell system of claim 2, wherein the system cover comprises the housing of an electronic device. ### Claim 4 (depends on 2) The fuel cell system of claim 2, wherein the system cover includes at least one air access port. ### Claim 5 (depends on 4) The fuel cell system of claim 4, wherein the system cover houses one or more of a protective porous member, a current collecting circuit, the fuel plenum, or a portion of the fuel reservoir. ### Claim 6 (depends on 2) The fuel cell system of claim 2, wherein the system cover is attachable to the fuel reservoir and an enclosed region is formed by the attachment of the fuel reservoir to the system cover, and wherein the fuel cell layer is disposed within the enclosure region. ### Claim 7 (depends on 6) The fuel cell system of claim 6, wherein the fuel cell layer includes one or more flexible walls structurally arranged to form the fuel plenum and wherein one or more flexible walls are supported by a portion of one or both of the fuel reservoir or the system cover. ### Claim 8 (depends on 1) The fuel cell system of claim 1, wherein the fuel reservoir comprises a fuel storage material and an outer enclosure wall conformably coupled to the storage material. ### Claim 9 (depends on 1) The fuel cell system of claim 1, further comprising a current collecting circuit in contact with the fuel cell layer, the current collecting circuit configured to receive and distribute current generated by the fuel cell layer. ### Claim 10 (depends on 9) The fuel cell system of claim 9, wherein the current collecting circuit is integral with the fuel cell layer. ### Claim 11 (depends on 9) The fuel cell system of claim 9, wherein the current collecting circuit is configured to distribute the current generated by the fuel cell layer to a portable electronic device. ### Claim 12 (depends on 11) The fuel cell system of claim 11, wherein the portable electronic device includes a cellular phone, a satellite phone, a laptop computer, a computer accessory, a display, a personal audio or video player, a medical device, a television, a transmitter, a receiver, a lighting device, an electronic toy, or a power tool. ### Claim 13 (depends on 9) The fuel cell system of claim 9, wherein the current collecting circuit is configured to distribute the current to an electronic conditioning circuit. ### Claim 14 (depends on 1) The fuel cell system of claim 1, wherein the fuel reservoir comprises a pressure regulator configured to pass the fuel out of the fuel reservoir and a refueling port configured to receive the fuel into the fuel reservoir and wherein the refueling port and the pressure regulator are separate structures. ### Claim 15 (depends on 1) The fuel cell system of claim 1, further comprising a protective porous member disposed adjacent the fuel cell layer. ### Claim 16 (depends on 1) The fuel cell system of claim 1, wherein the fuel plenum is at least partially defined by the fuel cell layer, the fuel reservoir, or a combination thereof. ### Claim 17 (depends on 1) The fuel cell system of claim 1, wherein the fuel reservoir substantially conforms to a volume of an allotted space within an electronic device. ### Claim 18 (depends on 1) The fuel cell system of claim 1, wherein the fuel reservoir includes at least one surface positioned adjacent a first portion of the fuel cell layer. ### Claim 19 (depends on 1) The fuel cell system of claim 1, wherein the fuel plenum is at least partially surrounded by a seal member that provides a seal between the fuel reservoir surface and the first portion of the fuel cell layer. ### Claim 20 (depends on 1) The fuel cell system of claim 1, further includes a supplemental battery. ### Claim 21 (depends on 1) The fuel cell system of claim 1, wherein the fuel is hydrogen. ### Claim 22 (depends on 1) The fuel cell system of claim 1, wherein the fuel reservoir is configured to store a hydrogen storage material. ### Claim 23 (depends on 22) The fuel cell system of claim 22, wherein the hydrogen storage material stores fuel by physisorption or chemisorption. ### Claim 24 (depends on 23) The fuel cell system of claim 23, wherein the hydrogen storage material includes a metal hydride and a binder. ### Claim 25 (depends on 23) The fuel cell system of claim 23, wherein the hydrogen storage material includes a structural filler and an outer enclosure wall of the fuel reservoir is conformably coupled to the structural filler. ### Claim 26 A method of fabricating a fuel cell system, the method comprising: forming a fuel reservoir configured to store a fuel therein; forming a fuel cell layer, the fuel cell layer including a flexible wall; contacting the fuel reservoir and the fuel cell layer, sufficient to form a fuel plenum positioned therebetween; and configuring the fuel reservoir to substantially conform to a volume of an allotted space within an electronic device, and wherein the fuel cell layer is configured to move when the fuel plenum is pressurized with the fuel. ### Claim 27 (depends on 26) The method of claim 26, further comprising forming a system cover having one or more air access ports. ### Claim 28 (depends on 27) The method of claim 27, further comprising coupling the system cover with one or more portions of the fuel reservoir. ### Claim 29 (depends on 26) The method of claim 26, further comprising contacting a current collecting circuit with the fuel cell layer. ### Claim 30 (depends on 26) The method of claim 26, further comprising disposing a protective porous member adjacent the fuel cell layer. ### Claim 31 (depends on 26) The method of claim 26, wherein the fuel reservoir includes a refueling port configured to receive the fuel into the fuel reservoir and a pressure regulator configured to pass the fuel out of the fuel reservoir and wherein the refueling port and the pressure regulator are separate structures.