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1
US20050255376A1
Publication/Patent Number: US20050255376A1
Publication date: 2005-11-17
Application number: 11/107,685
Filing date: 2005-04-15
Abstract: Disclosed is a battery safety device adapted to form an electrical circuit when compressed by a predetermined pressure or higher and convert the charged state of a battery to the discharged state, a battery having the safety device, and a method for adjusting the safety of a battery by converting the charged state of the battery to the discharged state, before the battery is damaged by a pressure, through an electrical circuit formed on a safety device by means of the pressure. The safety device has a first metal plate, a second metal plate, and a pressure-sensitive conducting film interposed between both metal plates and adapted to exhibit electrical conductivity when a predetermined pressure or higher is applied. The first and second metal plates are electrically connected to the positive and negative electrodes of the battery, respectively. The safety device connected to a battery prevents the battery from being damaged or at least from igniting or exploding, even when an external impact caused by a pressure, a nail, or a nipper or an external pressure is applied to the battery, by conducting the current of the battery to the safety device and discharging the battery before the battery is damaged by the external impact or external pressure. Disclosed is a battery safety device adapted to form an electrical circuit when compressed by a predetermined pressure or higher and convert the charged state of a battery to the discharged state, a battery having the safety device, and a method for adjusting the safety of a ...more ...less
2
US20050206342A1
Publication/Patent Number: US20050206342A1
Publication date: 2005-09-22
Application number: 10/803,900
Filing date: 2004-03-19
Abstract: Power unit for an electronic device and process for control and regulation of an electronic device powered by a fuel cell. Power unit includes a fuel cell having a low output voltage between 0.3 and 1 V, and a conversion device coupled to the fuel cell to convert an input voltage as low as 0.3 V to a higher output voltage to operate the electronic device. Power unit for an electronic device and process for control and regulation of an electronic device powered by a fuel cell. Power unit includes a fuel cell having a low output voltage between 0.3 and 1 V, and a conversion device coupled to the fuel cell to convert an input ...more ...less
3
US20050266299A1
Publication/Patent Number: US20050266299A1
Publication date: 2005-12-01
Application number: 10/528,042
Filing date: 2003-11-14
Abstract: A drop of discharge or charge capacity in discharging or charging with a large current is reduced without changing a design of a lithium ion secondary battery itself. When the lithium ion secondary battery for a car or a vehicles such as an electric automobile and a hybrid automobile is discharged or charged with, for instance, a large current not less than 5C, an intermittent power feeding of repeatedly executing a power feeding (t2) and a pause (t1) is carried out. A drop of discharge or charge capacity in discharging or charging with a large current is reduced without changing a design of a lithium ion secondary battery itself. When the lithium ion secondary battery for a car or a vehicles such as an electric automobile and a hybrid ...more ...less
4
US20050266300A1
Publication/Patent Number: US20050266300A1
Publication date: 2005-12-01
Application number: 11/056,032
Filing date: 2005-02-10
Abstract: Electrical energy supply methods and electrical energy power supplies are described. According to one aspect, an electrical energy supply method includes providing first and second battery assemblies individually configured to store electrical energy, coupling the first and second battery assemblies to form a unitary device configured to supply electrical energy to a load, charging one of the first and the second battery assemblies using electrical energy from a supply at a first moment in time, discharging electrical energy from the first and second battery assemblies to the load at a second moment in time, and disabling discharging of electrical energy from the other of the first and second battery assemblies during the charging. Electrical energy supply methods and electrical energy power supplies are described. According to one aspect, an electrical energy supply method includes providing first and second battery assemblies individually configured to store electrical energy, coupling the first and ...more ...less
5
US20050084754A1
Publication/Patent Number: US20050084754A1
Publication date: 2005-04-21
Application number: 10/685,473
Filing date: 2003-10-16
Inventor: Klein, Martin  
Assignee: Klein, Martin
Abstract: Embodiments of the present invention provide a method and system for controlling a multi-cell battery. In one embodiment of the present invention, a stack of bipolar wafer cells may be connected in series. Each cell may have an area that may be expandable in response to pressure. Such an area may be aligned with a corresponding area of at least one adjacent cell. The invention further includes a trigger mechanism that may be responsive to a force created by pressure generated in a cell in the stack of bipolar cells. Embodiments of the present invention provide a method and system for controlling a multi-cell battery. In one embodiment of the present invention, a stack of bipolar wafer cells may be connected in series. Each cell may have an area that may be expandable in response to ...more ...less
6
US20050104553A1
Publication/Patent Number: US20050104553A1
Publication date: 2005-05-19
Application number: 10/967,833
Filing date: 2004-10-18
Abstract: A station having a means for receipt of ambient energy from the environment and energizing power storage devices of objects of interest comprising one or more antennae and circuitry for converting said ambient energy into DC power for energizing said power storage devices. The circuitry for converting the ambient energy into DC power may include a rectifier/charge pump. The antenna of the station is tuned to maximize DC energy at the output of the rectifier/charge pump. The station can be used to energize power storage devices including capacitors and batteries that are used in electronic devices, such as cell phones, cameras, PDAs. Various antenna constructions may be employed. A station having a means for receipt of ambient energy from the environment and energizing power storage devices of objects of interest comprising one or more antennae and circuitry for converting said ambient energy into DC power for energizing said power storage devices. The ...more ...less
7
US20050231153A1
Publication/Patent Number: US20050231153A1
Publication date: 2005-10-20
Application number: 10/828,420
Filing date: 2004-04-20
Abstract: A technique for providing high voltage isolation detection in a fuel cell system. The fuel cell system includes a high voltage component and a fuel cell stack. A first conductor is electrically coupled to a positive terminal and the high voltage component, and a second conductor is electrically coupled to a negative terminal and the high voltage component. Current propagating through the first and second conductors is in opposite directions. The first and second conductors extend through an opening in a torroid. The current propagating through the conductors generate magnetic fields that are concentrated by the torroid. A sensor is positioned within the torroid that detects the magnetic fields. If the high voltage component is electrically isolated, then the magnetic fields cancel. If the high voltage component is not isolated, the magnetic fields do not cancel, and the sensor provides a signal indicative of the isolation fault. A technique for providing high voltage isolation detection in a fuel cell system. The fuel cell system includes a high voltage component and a fuel cell stack. A first conductor is electrically coupled to a positive terminal and the high voltage component, and a second conductor ...more ...less
8
US20050181246A1
Publication/Patent Number: US20050181246A1
Publication date: 2005-08-18
Application number: 10/514,831
Filing date: 2003-10-02
Inventor: Nakaji, Yoshiharu  
Abstract: A fuel cell system (1, 100) adapted to be installed on a moving object (V) is provided with an electric power generating element (31, 45) including a fuel cell (31) supplied with fuel gas and oxidizing gas to generate electric power, a warm-up mechanism (21 to 23, 32 to 39, 41 to 50′) enabled to achieve warm up of the electric power generating element, and a controller (13), in response to reception of a control signal transmitted from an external remote operator unit (3) and commanding a start-up completion time at which start-up of the fuel cell system is to be completed through the warm-up of the electric power generating element, controlling the warm-up mechanism to allow the warm-up of at least the electric power generating element to be completed in alignment with the start-up completion time. A fuel cell system (1, 100) adapted to be installed on a moving object (V) is provided with an electric power generating element (31, 45) including a fuel cell (31) supplied with fuel gas and oxidizing gas to generate electric power, a warm-up mechanism (21 to 23, 32 to 39, 41 ...more ...less
9
US20050191528A1
Publication/Patent Number: US20050191528A1
Publication date: 2005-09-01
Application number: 11/013,394
Filing date: 2004-12-17
Abstract: Disclosed are energy storage cells and battery systems made therefrom which can provide a regulated, constant voltage to a load independent of the charge state of the cells and other factors, such as cell polarization, which may cause the battery's output voltage to vary. In an illustrative embodiment, the battery system includes a dc-dc converter and a reference voltage circuit. The converter draws power from one or more energy storage cells and upconverts or downcoverts to provide an output voltage that matches the reference voltage. Disclosed are energy storage cells and battery systems made therefrom which can provide a regulated, constant voltage to a load independent of the charge state of the cells and other factors, such as cell polarization, which may cause the battery's output voltage to vary. In an ...more ...less
10
US20050147871A1
Publication/Patent Number: US20050147871A1
Publication date: 2005-07-07
Application number: 10/512,273
Filing date: 2003-04-21
Abstract: An operating method of a redox flow battery system that can provide a stabilized output to a system from a redox flow battery system annexed to a wind power generator, to produce an improved battery efficiency. The redox flow battery system comprises the wind power generator 10, a redox flow battery 30 annexed to the wind power generator, and an AC/DC converter 40 connected to the redox flow battery. In the operating method, an output of the wind power generator within a certain period of time in the past is subjected to a first averaging process; a present output value of the wind power generator is subtracted from the resulting value of the first averaging process, from which an input/output command value to the AC/DC converter 40 is determined; the input/output command value is subjected to a variation computing process to find variation without any consideration of a sign of the input/output command value; the resulting value obtained by the variation computing process is further subjected to a second averaging process, and an output command value for a pump P to circulate electrolytic solution of the redox flow battery is determined based on the result of the second averaging process. An operating method of a redox flow battery system that can provide a stabilized output to a system from a redox flow battery system annexed to a wind power generator, to produce an improved battery efficiency. The redox flow battery system comprises the wind power generator 10 ...more ...less
11
US20050142434A1
Publication/Patent Number: US20050142434A1
Publication date: 2005-06-30
Application number: 10/750,536
Filing date: 2003-12-31
Abstract: A battery pack includes a switching control port, a battery stack, an output power port, and switch circuitry. The switching control port receives a switch control signal from a battery pack port. The switch circuitry selectively couples the battery stack to the output power port based at least in part on the switch control signal. A battery pack includes a switching control port, a battery stack, an output power port, and switch circuitry. The switching control port receives a switch control signal from a battery pack port. The switch circuitry selectively couples the battery stack to the output power ...more ...less
12
US20050280392A1
Publication/Patent Number: US20050280392A1
Publication date: 2005-12-22
Application number: 10/873,571
Filing date: 2004-06-22
Inventor: Nguyen, Don  
Assignee: Nguyen, Don
Abstract: A system may include a fuel cell system to transmit first data, to generate power, and to deliver the generated power, and a mobile computing system to receive the first data, and to receive the generated power.
13
US20050026032A1
Publication/Patent Number: US20050026032A1
Publication date: 2005-02-03
Application number: 10/930,790
Filing date: 2004-09-01
Abstract: In a nickel-metal hydride rechargeable battery comprising a positive electrode of nickel hydroxide and a negative electrode of hydrogen-absorption alloy, prolonged battery life is achieved by limiting the charge and discharge operations to be performed in the range of 20-60% of the hydrogen-absorption capacity of the hydrogen-absorption alloy. In a nickel-metal hydride rechargeable battery comprising a positive electrode of nickel hydroxide and a negative electrode of hydrogen-absorption alloy, prolonged battery life is achieved by limiting the charge and discharge operations to be performed in the range of 20-60% of ...more ...less
14
US20050007063A1
Publication/Patent Number: US20050007063A1
Publication date: 2005-01-13
Application number: 10/876,292
Filing date: 2004-06-24
Inventor: Sekai, Koji  
Assignee: Sekai, Koji
Abstract: Electronic devices are intended to be small-sized and lightweight. A fuel cell 54 is provided for a power supply adapter 3. Power generated by the fuel cell 54 can be supplied to an electronic device 2. Accordingly, the electronic device 2 can be made more compact and lightweight than a conventional electronic device mounted with a fuel cell as a power supply source. Electronic devices are intended to be small-sized and lightweight. A fuel cell 54 is provided for a power supply adapter 3. Power generated by the fuel cell 54 can be supplied to an electronic device 2. Accordingly, the electronic device 2 can be made more compact and ...more ...less
15
US20050233185A1
Publication/Patent Number: US20050233185A1
Publication date: 2005-10-20
Application number: 11/151,511
Filing date: 2005-06-13
Abstract: There are many inventions described and illustrated herein. In one aspect, the present invention is directed to a portable fuel cell power and management system (for example, hydrogen and/or methanol based systems), components and/or elements thereof, as well as techniques for controlling and/or operating such systems. The fuel cell power management system (and method of controlling and/or operating same) actively monitors, manages and/or controls one or more operating parameter(s) of the fuel cell system. For example, the system monitors, manages and/or controls the consumption and/or the rate of consumption of fuel by the system, and in response thereto, may provide and/or alert the user to amount of fuel remaining, consumed, the rate of consumption and/or the time (or estimation thereof) remaining until all of the fuel is spent. In this way, the user may schedule or plan accordingly. There are many inventions described and illustrated herein. In one aspect, the present invention is directed to a portable fuel cell power and management system (for example, hydrogen and/or methanol based systems), components and/or elements thereof, as well as techniques for ...more ...less