Abstract: A battery includes a wound plate pack formed with a positive electrode comprising a positive electrode coated part having a positive foil and a positive electrode uncoated part, and a negative electrode comprising a negative electrode coated part having a negative foil and a negative electrode uncoated part; a battery container into which electrolyte is injected; a positive terminal and a negative terminal provided on the battery container; a positive current collector connecting the positive electrode uncoated part and the positive terminal; and a negative current collector connecting the negative electrode uncoated part and the negative terminal, having multiple through holes between a joining part with the positive current collector in the positive electrode uncoated part and the positive electrode coated part; and multiple through holes between a joining part with the negative current collector in the negative electrode uncoated part and the negative electrode coated part.

Abstract: A vehicle battery control system includes: a battery module that is constituted with a plurality of cells that are connected in series; a cell controller that detects each voltage at the plurality of cells; and a battery control unit that detects a total voltage of the battery module based on a signal from a voltage sensor disposed between a contactor connected to the battery module and an inverter equipment connected to the contactor and calculates a battery state of the battery module based upon the detected total voltage. And the battery control unit calculates the battery state based upon a total value of voltages at the plurality of cells detected by the cell controller in place of the total voltage when the contactor is in an open state.

Abstract: A secondary battery includes: a jelly roll that includes a positive and a negative electrode wound via a separator; a case; a lid; and electrically conductive input/output members, wherein: the electrically conductive input/output members include, at least; a positive and a negative electrode current collector plate with one end thereof connected to the positive and the negative electrode respectively; a positive and a negative electrode external conductive member with one end thereof connected to another end of the positive and the negative electrode current collector plate respectively and another end thereof extending to an outer side of the lid; the one end of the positive and the negative electrode external conductive member are respectively swage-fused to the other end of the positive and the negative electrode current collector plate; and an oxide layer is formed at a surface of each swage-fused area.

Abstract: A battery system for vehicle comprises a battery unit that is constituted with a plurality of serially connected cell groups each include a plurality of serially connected battery cells, integrated circuits that are each disposed in correspondence to one of the cell groups of the battery unit and each measure terminal voltages at the battery cells in the corresponding cell group, and a signal transmission path through which one of the integrated circuits is connected to another one of the integrated circuits or to a circuit other than that of the integrated circuits.

Abstract: A battery storage system includes: a plurality of battery modules that are electrically connected in series and in parallel, each comprising a plurality of battery cells; a plurality of sensors provided to each of the plurality of battery modules, that output at least signals corresponding to voltage and current of the each of the battery modules; a plurality of first control devices each of which is provided to the each of the plurality of battery modules, and obtains a power that can be inputted and outputted to and from the each of the battery modules based upon the voltage and current obtained from the output signals of the sensors of the each of the battery modules; and a second control device that performs overall control of the plurality of first control devices, and if a fault of a sensor in any one of the plurality of battery modules has occurred, the second control device obtains a total power that can be inputted and outputted to and from the all of the battery modules, based upon powers each of wh

Abstract: A cell controller capable of ensuring high safety even when a short occurs among voltage detecting lines without causing increased costs is provided. The cell controller 10 includes a unit cell voltage detecting section 7 to detect a voltage of each unit cell 1 constituting a battery group through each voltage detecting line and a SOC adjusting circuit for adjusting a SOC of each unit cell 1 having resistors 2 for SOC adjustment, switching elements 6, and a bypass control section 8 to exercise on/off control on the switching elements 6. Each resistor 2 is connected in series to each voltage detecting line and the unit cell voltage detecting section 7 to detect a voltage of each unit cell 1 through each of the resistors 2.

Abstract: A secondary battery has: an electrode group which includes sheet-form positive and negative electrode plates each including a metallic foil having an active material applied onto both sides of the metallic foil, and a separator disposed between the positive and negative electrode plates, wherein the positive and negative electrode plates and the separator are spirally wound together around a winding core into a flattened shape, wherein the electrode group has, at the both ends thereof as viewed in the winding core direction, respectively formed metallic foil exposed portions of the positive and negative electrode plates onto which the active material is not applied; a battery container which contains the electrode group therein, wherein the battery container has a battery casing and a battery cap; and positive and negative external terminals electrically connected to the metallic foil exposed portions of the positive and negative electrode plates, respectively.

Abstract: A shaft core includes a positive electrode shaft core portion having a positive electrode splaying portion at one end, a negative electrode shaft core portion having a negative electrode splaying portion at the other end, and an insulation portion that mutually insulates and integrates the positive and negative electrode shaft core portions. The positive electrode plate is electrically connected to the positive electrode collector in a state of being splayed through the positive electrode splaying portion, and the negative electrode plate is electrically connected to the negative electrode collector being splayed through the negative electrode splaying portion.

Abstract: A state detection device for power supply system comprises: a measurement unit that obtains current, voltage, and temperature at a chargeable and dischargeable power storage unit as measurement values; a storage unit that stores property information of the power storage unit; an arithmetic unit that uses different methods to calculate first and second states of charge for the power storage unit based upon the measurement values and the property information; a conflict detection unit that detects a conflict in an event that a difference between the first state of charge and the second state of charge is equal to or greater than a predetermined threshold; and a correction unit that corrects the property information during charging or discharging of the power storage unit in response to the conflict having been detected by the conflict detection unit.

Abstract: A non-aqueous electrolyte secondary battery comprising amorphous carbon as a main agent of a negative electrode active material and having high energy density, less degradation of capacity during storage in a charged state, and excellent in cycle life characteristics is provided. The negative electrode active material comprises a mixture of easily graphitizable carbon, less graphitizable carbon, and graphite, the mixture comprising composite particles having a structure where less graphitizable carbon is deposited to the surface of particles of easily graphitizable carbon and graphite. Particularly, it is preferred that the ratio of the less graphitizable carbon content relative to the total weight of the mixture is from 0.5 to 7%, the ratio of graphite content relative to the total weight of the mixture is from 5 to 20% in which the less graphitizable carbon is present at the surface of particles of easily graphitizable carbon by a mechanochemical treatment.

Abstract: A battery module is configured so that the first cell string and the second cell string are arranged between the first plate member and the second plate member and the second cell string is arranged closer to the second plate member side than the first cell string is and is arranged closer to the outlet side than the first cell string is. At the inlet side of the housing, the inlet is arranged closer to the first plate member than to the second cell string, at least a part between the inlet side of the second cell string and the second plate member is covered by the inlet-side guide plate, and the cooling air is introduced into the housing through the inlet so as to form a flow of the cooling air along the first plate member and a flow of the cooling air along the inlet-side guide plate.

Abstract: A sealed type battery includes: a can where an electrode winding group; a lid which has a liquid filling hole for injecting a liquid electrolyte and seals an opening of the can; and a liquid filling tap which is fitted to the liquid filling hole and seals the liquid filling hole by welding. A projection molten in welding is provided on one of the outer surface of the liquid filling tap and the outer surface of the lid connected to the liquid filling hole. The liquid filling tap is welded to the liquid filling hole using molten metal of the projection in welding as well.

Abstract: In a battery device including a battery pack in which a plurality of cells are connected in series, there are provided a battery control circuit or a battery device capable of eliminating a fluctuation in the voltage or charged state which can occur between the cells, or preventing the cells from being maintained in an over-charged state for a long period. A plurality of cell groups each including a plurality of cells are connected in series to form a battery pack. Cell controller is provided to the respective cell groups operate with electricity supplied from the cell groups allocated thereto so as to monitor and control the state of the cells of the cell group. Battery pack controller controls the cell controller based on information from the plurality of cell controller.

Abstract: A secondary battery adapted to minimize deterioration attributable to temperature is provided. In the secondary battery 30, a cross-sectionally elliptic electricity-generating element group 6 in which a positive electrode sheet including at one side in a longitudinal direction thereof a section not coated with an active material mixture, and a negative electrode sheet including at one side in a longitudinal direction thereof a section not coated with an active material mixture are wound via separators is accommodated in a battery container.

Abstract: A multi-series battery control system comprises battery cell groups each having a plurality of serially connected battery cells, a plurality of integrated circuits each disposed in correspondence to one of the battery cell groups and a battery control device that exchanges signals with the individual integrated circuits. Each integrated circuit includes an address setting means that receives a message unique to the integrated circuit, different from messages sent to other integrated circuits, from the battery control device, writes over an initialized address of the integrated circuit with the message and alters the message to a message with which an initialized address of another integrated circuit cannot be overwritten in a step assigned with an ordinal number matching the position of the integrated circuit with regard to the connection order.

Abstract: A cell module has a cell group with a plurality of cells connected to each other. The module comprises a bus bar plate including a bus bar connecting between the cells and an end cover for covering the bus bar plate. The cell module is configure to be fixed with the end cover.