Abstract: A battery module including a plurality of rechargeable batteries including a case and terminals protruding outside of the case; a first connecting member electrically connecting first terminals of neighboring rechargeable batteries and including a fuse unit configured to disconnect the first terminals of the neighboring rechargeable batteries when an overcurrent is generated; a plurality of second connecting members electrically connecting second terminals of the neighboring rechargeable batteries to terminals of connected rechargeable batteries; and a shorting member configured to generate a short circuit by connecting neighboring second connecting members to each other.

Abstract: Provided are a cathode and a lithium battery including the cathode. The cathode includes a cathode active material that includes an oxide represented by the following Formula 1: LixNi0.5+y(Mn1-z1-z2Mz1Moz2)0.5?yO2,??<Formula 1> wherein 0.9<x<1.2, ?0.02<y<0.2, 0.001<z1<0.5, 0.001<z2<0.5, and M is a metallic atom having an oxidation number of +2.

Abstract: A heat exchanger includes a first regenerator core and a second regenerator core and a four-way valve coupled to a cold section of the first regenerator core and to a cold section of the second regenerator core. The four-way valve directs input air to the first regenerator core or to the second regenerator core. A high-temperature passive check valve is coupled to a hot section of the first regenerator core and to a hot section of the second regenerator core. The high-temperature passive check valve comprises an inlet header coupled to the hot section of the first regenerator core or the second regenerator core, a valve poppet coupled to a valve stem and a valve seat located on a surface parallel to a surface of the valve poppet. Air entering the inlet header moves the valve poppet away from the valve seat, creating an opening through which air passes.

Abstract: A negative electrode active material for a nickel-metal hydride battery of the present invention includes a hydrogen storage alloy, the hydrogen storage alloy containing La, Mg, Ni, Co, Al, and element M. The molar ratio y of Ni to the total of La and Mg is 2?y?3, the molar ratio z of Co to the total of La and Mg is 0.25?z?0.75, the molar ratio ? of Al to the total of La and Mg is 0.01???0.05, and the molar ratio x of Mg to the total of La and Mg is 0.01?x?0.5. Element M represents at least one selected from the group consisting of Y and Sn, and the content of element M in the hydrogen storage alloy is 0.4 wt % or less.

Abstract: Electrochemical cells including a casing or cup for direct electrical contact with a negative electrode or counter electrode and serving as the current collector for the electrode. The casing includes a substrate having a plated coating of an alloy including copper, tin and zinc, the coating having a composition gradient between the substrate and the external surface of the coating wherein the copper content is greater adjacent the substrate than at the external surface of the coating and the tin content is greater at the external surface of the coating than adjacent the substrate. Methods for forming a coated casing and an electrochemical cell including a coated casing are disclosed, preferably including providing an electrode casing with a coating utilizing variable current density plating that reduces discoloration of a surface exposed to the ambient atmosphere.

Abstract: In a lithium ion secondary battery including a flat-plate electrode assembly which is configured by stacking the positive electrode, the separator, and the negative electrode in the thickness direction thereof, each of the positive electrode and the negative electrode includes a current collector and an active material layer. Each of the current collector includes a substantially rectangular current collector body, a heat radiating portion, and a lead portion, and the heat radiating portions are projected toward the outside of the electrode assembly so as not to overlap with each other in the thickness direction of the electrode assembly. In this way, heat caused inside the lithium ion secondary battery can be diffused efficiently to the outside, and safety of the lithium ion secondary battery can be further increased, without complicating the battery structure and decreasing mechanical strength of the battery.

Abstract: A polymer electrolyte membrane for a fuel cell, a method of preparing the same, and a fuel cell system comprising the same. The polymer electrolyte membrane includes a metal-bound inorganic ion-conductive salt and an ion-conductive cation exchange resin.

Abstract: By being embedded in a portable computing device, a battery pack is made essentially inaccessible to unauthorized users, thereby allowing for a battery pack that can be made smaller and of lighter construction material, thereby facilitating greater component density within the portable computing device, lower cost to manufacture, and more environmentally secure.

Abstract: A battery pack for being slidably loaded on an electronic apparatus. The battery pack has a terminal case disposed on the battery case. Terminal grooves, in which are disposed terminal members, arc disposed on the terminal case. Guide grooves are provided in the terminal case. Positioning ribs are formed on the battery case; and a terminal pressing rib is formed on the battery case for pressing the terminal case in the battery case.

Abstract: A battery device having a casing configured to house at least one battery cell and having an end surface that defines an outermost surface of the casing. A terminal case disposed in the casing has terminal grooves, terminal members in the terminal grooves and guide grooves. The terminal case projects outwardly from the end surface of the casing so as to extend beyond the outermost surface of that case.

Abstract: A fuel cell or fuel cell stack heater using resistive heat. A resistive conductor (preferably some type of metal wire) is attached to a source of electricity such as a battery. The resistive conductor is in proximity with the fuel cell or stack so that when the resistive conductor is heated, the cell or stack will also become hot. An insulating material surrounds the outside of the fuel cell or stack, so that it encloses the cell or stack and the resistive conductor. The insulating material will capture heat from the resistive conductor and any waste heat given off by the operation of the fuel cell or stack. A means for modifying the amount of electrical current in the resistive conductor is attached to the apparatus. When the fuel cell or stack reaches the desired temperature, the means is employed to reduce or turn off current in the resistive conductor.

Abstract: An electrode having a current collector with a plurality of through holes, and active material layers provided on both sides of the current collector. The current collector has projections extending on the top side or on the back side of the current collector from edges of the through holes, and an angle between each of the projections and a surface direction of the current collector is in the range of 30 to 80°.

Abstract: An electrochemical cell is provided with an enhanced pressure relief vent formed in a closed end of the cell container that allows for effective venting of gas from the closed end of the container. The cell includes a container having a first end, a second end, a side wall extending between the first and second ends, and an end wall extending across the first end. The cell has a positive electrode, a negative electrode, and an aqueous alkaline electrolyte, all disposed in the container. The cell further includes a pressure relief vent mechanism having an offset C-shaped reduced thickness groove formed in the end wall of the container. A cover can be welded to the closed end wall of the container over the pressure relief vent mechanism.

Abstract: A battery case is formed by drawing a metallic plate thin to form a cylindrical body 10 having a closed end and cutting away part of the cylindrical body 10 at an opening 11 thereof in the direction perpendicular to an axis of the cylindrical body 10. The cutting of the cylindrical body 10 is carried out by moving a second blade 30 arranged outside the cylindrical body 10 relatively toward the axis of the cylindrical body with a first blade kept abutting the inner circumference of the cylindrical body 10. As a result, an inward burr 13 extending in the direction perpendicular to the side face of the cylindrical body 10 is formed on a cut surface 12 of the cylindrical body 10, but the burr 13 is prevented from entering the battery case.

Abstract: A nonaqueous electrolyte battery includes a positive electrode, a negative electrode, a separator and a nonaqueous electrolyte. The negative electrode contains a negative electrode active material having a Lithium ion insertion potential of 0.4 V (vs. Li/Li+) or more. The separator is provided between the positive electrode and the negative electrode. The separator has a porosity of 50% or more and a pore diameter distribution in which a median diameter is larger than a mode diameter. The porosity and the pore diameter distribution are measured by mercury porosimetry. A surface roughness of the negative electrode is larger than the mode diameter.

Abstract: A battery cover latch mechanism includes a housing, a battery cover, and a latching part. The housing includes a clasp positioned thereon. The battery cover includes a guiding portion and a resisting block facing the guiding portion. The latching part includes a button and a resilient bar assembled on the battery cover. The button includes a hook resisting the resisting block. The button slidably and releasably latches to the clasp to lock the battery cover to the housing or release the battery cover from the housing. The invention also discloses a portable electronic device using the battery cover latch mechanism.

Abstract: A battery cover assembly for a portable electronic device includes a housing, a battery cover, a pivot member and two latch members. The housing forms two support stages at two sides thereof. The battery cover forms two extending portions corresponding to the support stages. Each support stage forms two protrusions. The pivot member rotatably connects the battery cover to the housing. The two latch members are attached to the support stages. Each latch member includes two receiving spaces receiving a corresponding protrusion. Each latch member deforms to allow the battery cover to releasably latch to the housing.

Abstract: A battery device to be loaded on an electronic apparatus comprises a casing configured to house at least one battery cell therein and having upper and lower surfaces, first and second longitudinal side surfaces disposed between the upper and lower surfaces, and an end wall disposed between the upper and lower surfaces and also disposed between the first and second longitudinal side surfaces. A step is disposed in the end wall and a storage element is disposed in the step to receive an electric contact portion, the step extending to the first longitudinal side surface, and the end wall extends from the second longitudinal side surface to the step and projects beyond the step.

Abstract: A battery cover which detachably mounted on a portable electronic device to protect the battery of the portable electronic device. The battery cover includes a main cover and a sliding cover, the sliding cover is slidably mounted on the main cover. Two opposite ends of the main cover and the sliding cover each includes at least one tab or projection protruding there from respectively. The battery cover has a simple structure, and is easy for operating. The invention also includes a portable electronic device using the battery cover.

Abstract: A mobile phone battery includes a battery body and a protecting structure. The battery body includes positive and negative electric poles formed on a side wall of the battery body. The protecting structure is movably set on the battery body. The protecting structure includes a protecting piece. The protecting piece is operable to cover or expose one of the electric poles.