Abstract: In a battery system including an assembled battery having a plurality of battery cells connected in series, each of a plurality of monitoring units includes a voltage classification unit configured to classify a terminal voltage between each pair of input terminals in the monitoring unit as a cell voltage or as a zero voltage that is a terminal voltage of substantially zero. The input terminals in each of all or all but one of the monitoring units include at least one specific terminal pair for acquiring the zero voltage at a different position and/or include a different number of specific terminal pairs for acquiring the zero voltage. Each of the plurality of monitoring units further includes an identifier generation unit configured to generate an identifier based on at least one of the position of the at least one specific terminal pair and the number of specific terminal pairs.

Abstract: An assembly that may include a press that may form an indentation within a tab, a roller assembly including a rolling element that may compress a first tab portion of the tab that extends from the indentation against a busbar, and a welding device that may weld the first tab portion of the tab to the busbar.

Abstract: Disclosed are: a polymer electrolyte membrane which can prevent ionic conductor loss even upon the occurrence of chemical degradation in the ionic conductor according to long term use and thus can be significantly improved in chemical durability; a manufacturing method therefor; and an electrochemical device comprising same. The polymer electrolyte membrane of the present disclosure comprises a polymer electrolyte material. The polymer electrolyte material comprises an ionic conductor and a crosslinker unbound to the ionic conductor. The crosslinker has at least one cross-linkable functional group which can couple with the ionic conductor that has been degraded, thereby causing crosslinking with the ionic conductor.

Abstract: A lithium-ion battery includes multiple electrodes. At least one of the electrodes is comprised of multiple sheets of electrode mixture, and each of the sheets includes a different percentage of a solid-state electrolyte within the electrode mixture. The sheets are laminated together and to a current collector such that a bottom sheet nearest the current collector comprises a lowest percentage of the solid-state electrolyte. A gradient of percentages of the solid-state electrolyte is formed from the bottom sheet to a topmost sheet comprised of a highest percentage of the solid-state electrolyte.

Abstract: A powderous positive electrode material for a lithium secondary battery has the general formula Li1+x[Ni1?a?b?cMaM?bM?c]1?xO2?z. M is one or more elements of the group Mn, Zr and Ti. M? is one or more elements of the group Al, B and Co. M? is a dopant different from M and M?, and x, a, b and c are expressed in mol with ?0.02?x?0.02, 0?c?0.05, 0.10?(a+b)?0.65 and 0?z?0.05. The material has an unconstrained cumulative volume particle size distribution value (?0(D10P=0)), a cumulative volume particle size distribution value after having been pressed at a pressure of 200 MPa (?P(D10P=200)) and a cumulative volume particle size distribution value after having been pressed at a pressure of 300 MPa (?P(D10P=300)). When ?P(D10P=200) is compared to ?0(D10P=0), the relative increase in value is less than 100%. When ?P(D10P=300) is compared to ?0(D10P=0), the relative increase in value is less than 120%.

Abstract: Provided are a battery management system and a battery management method using the same. According to the present invention, it is possible to select high-risk battery cells that are highly likely to be out of an operating voltage range by applying a change amount according to SoH for each of the battery cells to each SoC for each of the battery cells, and calculate the representative SoH of the battery pack based on the selected high-risk battery cells, and then calculate the actual usable capacity of the battery pack.

Abstract: A fuel cell system (200) for providing electrical energy. The system (200) comprises a fuel cell stack (201), an anode subsystem (203) with a proportional valve (205) for dosing a volume of gas to be fed to the fuel cell stack (201), a purge valve (207) for discharging gas from the anode subsystem (203) into an exhaust-gas path (209) of the fuel cell system (200), and a control unit (211) for controlling the proportional valve (205) and the purge valve (207). The control unit (211) is configured to use an electrical control current that is fed to the proportional valve (205) to readjust for a purging operation to draw conclusions regarding a hydrogen concentration in a gas that is fed to the purge valve (207), wherein the control unit (211) is furthermore configured to adjust the fuel cell system (200) in a manner dependent on the determined hydrogen concentration.

Abstract: Provided a gas diffusion layer for fuel cells, the gas diffusion layer including: a carbon substrate; and a microporous layer formed on the carbon substrate, wherein the microporous layer comprises first carbon particles having a partially graphitized structure and a water-repellent binder resin binding the first carbon particles, and the microporous layer further comprises a cerium compound, a nitrogen-doped cerium compound, nitrogen-doped second carbon particles having a partially graphitized or non-graphitized structure, or a mixture of two or more, as a radical scavenger capable of removing hydrogen peroxide generated at a fuel cell open circuit potential or a higher potential.

Abstract: A cathode configured for use within a fuel cell system is provided. The cathode includes a cathode substrate. The cathode further includes a coating disposed upon the cathode substrate and including a fluorocarbon polymer additive configured for sintering at a temperature of less than 200° C. The fluorocarbon polymer additive may be mixed with a catalyst ink coating or may be applied separately as a topcoat layer.

Abstract: Disclosed herein is a non-aqueous electrolyte secondary battery containing at least a positive electrode capable of the absorbing and releasing of a lithium ion, a negative electrode capable of the absorbing and releasing of the lithium ion, and a non-aqueous electrolyte solution containing a non-aqueous solvent and an electrolyte dissolved in the non-aqueous solvent, where the negative electrode contains a carbonaceous material, and the non-aqueous electrolyte solution contains, in addition to an electrolyte and a non-aqueous solvent: (A) a compound having at least two isocyanate groups per molecule, (B) a monofluorophosphate salt or a difluorophosphate salt, at from 0.001 mass % or more to 5 mass % or less in the non-aqueous electrolyte solution.

Abstract: A self-regulating battery may generate a basis state for one or more modules using one or more system inputs. The system inputs comprise current, voltage, and battery degradation. The battery generates a family of weighted forecasts for future bus demands using usage and performance based weights. The battery generates one or more plans to support demand from the battery using the weighted forecasts. The battery scores the one or more plans based on efficiency of power extraction from the battery, and combines the scored one or more plans with an updated SoH value based on induced degradation from a usage plan. The battery generates the combined scored for each of the one or more plans, and transmits one of the combined scored to the battery management unit for execution.

Abstract: An embodiment processing system comprises terminals configured to be connected to cells of a rechargeable battery to receive cell voltages, a digital processing circuit, a serial communication interface and a transmission queue interfacing the digital processing circuit with the serial communication interface for parallel operation. The digital processing circuit synchronously acquires a given number of digital samples of each of the cell voltages and stores them to a memory. The digital processing circuit encodes the digital samples stored to the memory via a data compression module, and stores the encoded data to the transmission queue. For example, the data compression module may generate the encoded data by subtracting a given offset from each digital sample to generate values indicative of the dynamic variation of each sample with respect to the offset, and removing a given number of most significant bits from each value.

Abstract: The present invention relates to a pouch exterior material which is for a lithium secondary battery and includes an inner layer, an outer resin layer, and a metal layer located between the inner layer and the outer resin layer, wherein the inner layer contains an ethylenically unsaturated group, and a lithium secondary battery including the pouch exterior material.

Abstract: A hydrophilic porous carbon electrode which has excellent hydrophilicity, which has high reaction activity when used for a battery, and with which excellent battery characteristics is able to be obtained is provided. A hydrophilic porous carbon electrode is a sheet-form hydrophilic porous carbon electrode in which a carbon fiber is bonded using a resin carbide and has a contact angles ?A of water on both surfaces in a thickness direction being 0 to 15° and a contact angle ?B of water in a middle portion in the thickness direction being 0 to 15°. The hydrophilic porous carbon electrode is obtained by forming the carbon fiber and a binder fiber into a sheet, impregnating the sheet into a thermosetting resin, subjecting it to heat press processing, and then subjecting it to carbonization at 400 to 3000° C. in an inert atmosphere. The hydrophilic porous carbon electrode is transported and is subjected to a heat treatment while an oxidizing gas flows at 400 to 800° C.

Abstract: Ways of making electrodes and electrodes produced thereby are provided. Dry blending of a powder mixture including a catalyst, an ionomer, and a polyether forms a blended mixture, which can be comminuted to obtain a desired particle size. A slurry of the blended mixture is formed with an aqueous medium and the slurry is coated onto a substrate to form a coated substrate. The coating can be transferred to another substrate or material for use as an electrode and/or the substrate of the coated substrate can form part of a structure, such as a membrane electrode assembly for use in a fuel cell.

Abstract: A gelable system is formed by mixing lithium salts and small-molecule ether compounds such as cyclic ether compounds or straight-chain ether compounds, optionally added with inorganic nanoparticles, additives, other solvents and/or electrolytes; a gel system or solid system is formed by interaction between them (such as the formation of new complexes or self-assembly, etc.), and by ring-opening polymerization or polycondensation of the small-molecule cyclic ether compounds, or by addition-fragmentation chain transfer polymerization of the small-molecule straight-chain ether compounds, etc. The gel system or solid system not only has better safety in use than common gel systems or solid systems, but also better adjustability of strength. The strength of the formed gel can be improved from the source by changing composition and type of raw materials. The improvement in the strength enables the gel system to be expanded into the solid system, thereby further extending the application range of the gel system.

Abstract: The present invention provides a catalyst which has oxygen reduction catalytic ability surpassing that of a platinum-carrying carbon material. This catalyst comprises a carbon material and a metal complex represented by formula (1). In formula (1), X1 to X8 each independently represent a hydrogen atom or a halogen atom, D1 to D4 each represent a nitrogen atom or a carbon atom wherein the carbon atom has bound thereto a hydrogen atom or a halogen atom, and M represents a metallic atom.

Abstract: A method of mixing a cathode active material in a process of manufacturing a cathode of a lithium secondary battery is provided. The method includes a preparation step of preparing a lithium compound removal solution in which PAA (polyacrylic acid) is mixed with a solvent, a removal step of reacting the lithium compound removal solution with the cathode active material, on a surface of which a lithium compound is present, thus removing the lithium compound present on the surface of the cathode active material, and a mixing step of mixing the cathode active material, which is mixed with the lithium compound removal solution, with a conductive material and a binder.

Abstract: According to one embodiment, an electrode construct including an electrode and a composite membrane is provided. The electrode includes an active material-containing layer and a current collecting layer. The active material-containing layer includes a first principal surface and a second principal surface. The current collecting layer is in contact with the second principal surface. The composite membrane includes a composite layer in contact with the first principal surface. The composite layer contains inorganic solid particles and a polymeric material. A peel strength ?1 at a first interface between the active material-containing layer and the composite layer and a peel strength ?2 at a second interface between the active material-containing layer and the current collecting layer satisfy a relationship of ?1>?2, and ?2?1 N/cm.

Abstract: A battery pack cooling system includes a battery pack case, a cooling fluid passage, a cooling medium passage and a water absorber. The battery pack case houses a battery module. The cooling fluid passage is disposed in a vicinity of the battery module. Cooling fluid for cooling the battery module is to flow through the cooling fluid passage. The cooling medium passage is configured to exchange heat with the cooling fluid. The cooling medium passage is disposed so as to be exposed to a space in the battery pack case. Cooling medium is to flow through the cooling medium passage. The water absorber is made of a water absorbable material. The water absorber is configured to absorb water that is condensed on the cooling medium passage.