Abstract: A battery pack for an electric power tool has a housing and a housing cover that closes off the housing. Battery cells are arranged in the housing and electrically conductingly connected to one another. An electronic circuit for monitoring operating parameters of the battery cells is provided wherein the electronic circuit is mounted on a circuit board and is arranged in the housing. The housing cover has an inner side facing the battery cells. The inner side has a receptacle that is delimited by an outer receptacle rim. The circuit board is received in the receptacle and is spaced from a bottom of the receptacle so that a filling space is provided between circuit board, bottom of the receptacle, and the receptacle rim. A cured potting compound fills out the filling space.

Abstract: A fuel cell includes a stack structure composed of fuel cell units with current collectors between the fuel cell units, a casing housing the stack structure, and a gas flow-regulating member provided in a gap between the casing and the stack structure. The fuel cell unit includes: a cell plate which holds at least one cell and has a gas introduction hole for one of fuel gas and air; and a separator plate which has a gas introduction hole for the one of the fuel gas and the air. The casing introduces the other of the fuel gas and the air via a gas introduction portion and flows the other gas to a gas discharge portion. The gas flow-regulating member guides the other gas to the gas discharge portion through the current collectors.

Abstract: A hydrogen-oxygen fuel cell including an electrolyte sandwiched between two catalyst layers or sheets, each catalyst layer or sheet being in contact with a porous electrode, in which one or several catalyst layers or sheets and one or several electrode layers or sheets interpenetrate.

Abstract: The present invention provides a water based lithium secondary battery that can inhibit deteriorations in capacity owing to charge-and-discharge operations and maintain a high capacity even after it is charged and discharged repeatedly. The water based lithium secondary battery includes a positive electrode, a negative electrode, a separator 4 sandwiched between these, and an aqueous electrolyte solution obtained by dissolving an electrolyte made of a lithium salt in a water based solvent. As the water based solvent, a pH buffer solution is employed. The buffer solution is obtained by dissolving an acid and its conjugate base's salt, a base and its conjugate acid's salt, a salt made from a weak acid and a strong base, a salt made from a weak base and a strong acid, or a salt made from a weak acid and a weak base in water.

Abstract: A battery box includes at least one battery and a switch apparatus. The switch apparatus includes a first conductor, a second conductor, and an operation element. The first conductor includes a first conductive portion and a first contact portion protruding from the first conductive portion. The second conductor includes a second conductive portion and a second contact portion protruding from the second conductive portion. The operation element is movable with respect to the housing and able to resist the second conductive portion along with the movement of the operation element. When the operation element is moved to resist the second conductive portion, the second contact portion contacts with the first contact portion, and when the operation element is moved to separate from the second conductive portion, the second contact portion does not contact with the first contact portion. An electronic device using the battery box is also provided.

Abstract: A sheet body includes an electrolyte layer, a fuel electrode layer formed on the upper surface of the electrolyte layer, and an air electrode layer formed on the lower surface of the electrolyte layer, wherein these layers are stacked and fired in such a manner that the electrolyte layer is sandwiched between the fuel electrode layer and the air electrode layer. The fuel electrode layer is a porous layer including a first layer on a side close to the electrolyte layer made of fine particles of Ni and YSZ, and a second layer on a side apart from the electrolyte layer made of fine particles of Ni, YSZ, and ZrSiO4. The zircon particles are uniformly distributed in the second layer in the plane direction and in the stacking direction.

Abstract: A liquid tank and a tubular structure for liquid tank capable of suctioning an internal liquid to the last drop even when the tank is tilted to any angle are provided. The tubular structure 40 has a duct line 41 extending from a specific position 41A in the tank body 30 in a direction toward apexes, sides, or faces of the tank body 30. Ends of the duct line 41 are contacted with the apexes, the sides, or the faces of the tank body 30, and have a liquid inlet 41B. Since the inlet 41B is limited to the ends of the duct line 41, flow of the liquid in the tank body 30 has a certain directivity that the liquid enters through only the inlet 41B into the duct line 41, is transported to the specific position 41A, and is suctioned outside. In the tubular structure 40, an inner structure 45 having voids thorough which the liquid passes such as a porous body is provided.

Abstract: The apparatus and methods described herein generally relate to a method for preparing electrodes for lithium ion cells, where both the positive and negative electrodes of the cell include metal oxides processed according to the methods described herein.

Abstract: A secondary battery, sheathes a protection circuit board with a separate cover, connects the sheathed protection circuit board to a bare cell, and executes a molding or hard pack operation with a molding resin member in a space between the protection circuit board and the bare cell. The secondary battery may be constructed with a rechargeable bare cell, a protection circuit board supporting a protection circuit electrically connected to the bare cell and an external terminal, a board exterior cover adhering to the protection circuit board and the board exterior cover exposing the external terminal, and a first lead plate and a second lead plate that electrically connect the bare cell to the protection circuit board.

Abstract: A battery includes a plurality of stacking supports including retaining flanges and support surfaces; and a plurality of generally cylindrical cells. Each cell is supported on a pair of the support surfaces. Each cell has an annular notch defined in a side wall with the annular notch mating with one retaining flange. The cells are arranged upon the stacking supports in a plurality of cell rows. The support surfaces are arranged on the stacking supports in such a manner so that the cells are arranged in a close-packed array and to maintain at least a predetermined distance between adjacent cells.

Abstract: Positive electrode active materials are described that have a very high specific discharge capacity upon cycling at room temperature and at a moderate discharge rate. Some materials of interest have the formula Li1+xNi?Mn?CO?O2, where x ranges from about 0.05 to about 0.25, ? ranges from about 0.1 to about 0.4, ? ranges from about 0.4 to about 0.65, and ? ranges from about 0.05 to about 0.3. The materials can be coated with a metal fluoride to improve the performance of the materials especially upon cycling. Also, the coated materials can exhibit a very significant decrease in the irreversible capacity lose upon the first charge and discharge of the cell. Methods for producing these materials include, for example, a co-precipitation approach involving metal hydroxides and sol-gel approaches.

Abstract: A hydrogen generator includes a water storage container for storing water, a reaction container for receiving a solid fuel that is a mixture of a complex metal hydride and catalysts, and a water supplying source that is connected between the water storage container and the reaction container to supply the water to the reaction container.

Abstract: A lithium secondary battery includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and a non-aqueous electrolyte. The positive electrode active material comprises at least one lithium-containing composite oxide represented by the following general formula: LixM11?yM2yO2 where M1 and M2 are different elements, M1 is Ni or Co, M2 is at least one selected from Ni, Co, Mn, Mg, and Al, 1?x?1.05, and 0?y?0.7. The negative electrode active material comprises at least one selected from the group consisting of silicon, tin, a silicon-containing alloy, and a tin-containing alloy. The non-aqueous electrolyte includes an organic peroxide.

Abstract: An electrochemical device, having an anode containing magnesium; a cathode stable to a voltage of at least 3.2 V relative to a magnesium reference; and an electrolyte containing an electrochemically active magnesium salt obtained by mixing an organic magnesium compound with an aluminum compound in an ether solvent and separation of the electrochemically active salt from the reaction mixture is provided. The separated electrochemically active salt is stable and safe to handle in comparison to conventional Grignard based electrolyte systems.

Abstract: A method and apparatus for making fuel cell components via a roll to roll process are described. Spaced apart apertures are cut in first and second gasket webs that each include adhesives. The first and second gasket webs are transported to a bonding station on conveyers. A membrane web that includes at least an electrolyte membrane is also transported to the bonding station. At the bonding station, a gasketed membrane web is formed by attaching the first and second gasket webs to the membrane web. The first gasket web is attached to a first surface of the membrane web via the adhesive layer of the first gasket web. The second gasket web is attached to a second surface of the membrane web via the adhesive layer of the second gasket web.

Abstract: One aspect of the present invention pertains to a method for producing a negative electrode for a non-aqueous electrolyte secondary battery, which comprises a paste preparing step of kneading a mixture containing a negative electrode active material, a binder resin having a glass transition temperature within a range from 20 to 40° C. and a dispersion solvent to prepare a negative electrode material mixture paste, a paste applying step of applying the negative electrode material mixture paste controlled to a temperature which is at least 10° C. higher than the glass transition temperature of the binder resin on a current collector to form a coating film, a coating film drying step of drying the coating film to form a negative electrode precursor, and a rolling step of rolling the negative electrode precursor to prepare a negative electrode having a negative electrode material mixture layer.

Abstract: A fuel cell system includes a fuel cell stack for generating electricity by a electrochemical reaction of hydrogen and oxygen; a controller for controlling the operation of the system; a hydride storage tank for storing hydride powder as a source of hydrogen for the fuel cell stack; a hydrogen separating chamber for collecting hydrogen gas generated from a reaction of the hydride powder and liquid catalyst; a powder transferring device for transferring the hydride powder to the hydrogen separating chamber; and a residue collector for collecting residues that are generated from the reaction and settled at the bottom of the hydrogen separating chamber.

Abstract: A battery cover structure includes a cover, a main housing, a supporting member and two connecting members. One end of the cover is rotatably attached to the main housing. The main housing defines a recess. The supporting member is received in the recess of the main housing, with one end of the supporting member being rotatably attached to the main housing. The supporting member defines a cavity for receiving a battery and defines two guiding holes at two opposite sides thereof. One end of the connecting member is rotatably attached to the cover, and the other end is slidably and rotatably engaged in the guiding hole of the supporting member. When the cover is opened, the supporting member is raised by the connecting members.

Abstract: A semi-passive fuel cell system is provided. A stack in which a plurality of unit cells are laterally stacked with one another is provided. Each unit cell includes a membrane-electrode assembly and bipolar plates located on both sides of the membrane-electrode assembly. The membrane-electrode assembly includes an electrolyte membrane, a cathode electrode, and an anode electrode. The cathode and anode electrodes, respectively, are formed on each side of the electrolyte membrane. Also provided are a means for supplying fuel and a means for supplying air. Each of the bipolar plates has air paths formed on a surface facing the cathode electrode and extending from an upper end to a lower end of the bipolar plate. The air supply means includes ducts which are respectively installed on an upper end and a lower end of the stack, and includes a means for blowing air through the ducts.

Abstract: A secondary battery that can simplify manufacturing of an assembly of a bare cell and a protection circuit module, and reduce manufacturing costs by installing a connecting member of a protection circuit module electrically coupled to a bare cell in one direction of the bare cell. The secondary battery may be constructed with a bare cell; a protection circuit module installed on one edge side surface of the bare cell; first and second electrode terminals included in the bare cell; and first and second lead plates respectively configured to electrically couple the protection circuit module to the first and second electrode terminals, wherein the first and second lead plates are installed on the same single side edge surface between side surfaces of the bare cell.