[Problem] In a battery pack having a battery unit in which plural cell groups are connected in series, and a protection circuit board to protect by detecting intermediate electric potentials, tap portions of lead plates in the battery unit and terminals of the protection circuit board are easily…
A solar cell module wherein fluctuations of output characteristics are unlikely to occur is provided. This solar cell module includes a solar cell, a first protective member provided on an outer side of the solar cell when viewed from the moving body, a second protective member provided on an inner…
Provided is an inverter unit that is used in an electric vehicle having a left motor for causing a drive wheel on the left side to rotate and a right motor for causing a drive wheel on the right side to rotate, the inverter unit being used as either a left inverter unit for driving the left motor…
[Problem] To provide a power conversion device capable of extracting a large amount of power from a solar cell even in low solar radiation. [Solution] The power conversion device includes: a booster circuit 4 that boosts an output voltage from a solar cell 1; and an inverter circuit 5 that converts…
A solar cell module for in-vehicle use includes a first terminal, a second terminal, solar cell units, and a diode. Solar cell units are electrically connected in parallel between the first terminal and the second terminal and each includes solar cells electrically connected in series. A diode is…
A switching circuit (13) is provided with a charging switch (31) and a discharging switch (32). When the charging switch is turned ON, a battery module (21) is charged by electric power from an electric power supply (ACP, 16). When the discharging switch is turned ON, the power discharged from the…
Problem: An object is to achieve a charging/discharging circuit using an element with low voltage endurance, and to provide a charge storage system, the charging/discharging circuit and a utility interconnection device at low cost. Solution: A charge storage system 3 includes: a storage 30; and a…
[Problem] To provide a power conversion apparatus that easily eliminates fluctuations of output from solar cells and the like. [Solution] This power conversion apparatus is provided with: a DC link unit; a first transformer circuit for transforming direct-current voltages outputted from a direct…
In the present invention, a main switch circuit (13) is provided between an electric power line (PL), to which voltage outputted from a solar cell (11) is applied, and a battery module (12). A protection circuit (19) turns OFF the main switch circuit (13) to protect the battery module (12) from…
An assembled battery control system is provided with an assembled battery composed of a plurality of rechargeable battery packs connected in series, and a control unit for controlling the assembled battery. Each battery pack has a discharge unit. The control unit confirms the open-circuit voltage…
The purpose of the present invention is to appropriately perform, in a battery assembly control system, processing for eliminating the voltage difference occurring when a plurality of battery control units are connected in parallel. The battery assembly control system (10) comprises a master…
An electrical storage system (100) includes: a plurality of electrical storage portions (BAT[1] to BAT[n]) that are connected parallel to each other; a measurement portion that measures the full charge capacity of each of the electrical storage portions while switching an electrical storage portion…
A current collection box (4) is provided with lines (La to Ld) which are connected to each of a plurality of solar cells (1a to 1d), and boosting circuits (41a to 41 d) which are interposed upon each of at least two or more lines of the plurality of lines (La to Ld) so as to boost the output…
It is aimed at simplifying an assembly operation of a battery pack while providing a constitution in which heat generation components are efficiently cooled. [0002] Solution to Problem [0003] A battery pack 100 includes a plurality of unit cells 11 whose exterior is extended in one direction and…
In the present invention, first boosting circuits (41 a to 41 d) are interposed upon each of direct current power lines (La to Ld). The boosting ratios of the first boosting circuits (41 a to 41 d), for each iteration of a first cycle, are variably controlled during a first period so that the…
While a plurality of battery packs are housed in fixed positions of a rack main body, the battery packs are connected to each other efficiently and moreover safely. In a rack-mount power supply device, a plurality of battery packs 1 are removably placed in a rack main body 2. In each battery pack…
A communication system provided with a battery assembly obtained by connecting in series a plurality of battery packs having at least one rechargeable battery cell; a battery management unit for managing the battery packs; and an optical line used for transmitting from the battery packs to the…
A communication system includes: an assembled battery including a plurality of series connected battery packs having at least one storage battery cell; a battery management section adapted to manage the battery packs; and an optical line connected in daisy chain for use in communication between the…
The present invention is aimed at providing a nonaqueous electrolyte secondary battery capable of improving cycling characteristics by improving a positive electrode active material when particles with a structure in which primary particles are aggregated to from secondary particles are used as the…
There is provided an electricity storage system (10) which comprises an electricity storage device (30), a charge and discharge switch device (60) placed to be connected to the electricity storage device (30), a control block (80) which is a charge and discharge control device which controls…
The present invention provides a positive electrode active material for a nonaqueous electrolyte secondary battery which is capable of improving an initial discharge capacity and suppressing a decrease in discharge voltage and a decrease in battery capacity even in repeated charge-discharge cycles…
The method of detecting battery degradation level detects the change in residual capacity (SOC) for one charging period or one discharging period of a battery 1 being charged and discharged. Weighting factors that establish degradation level according to the value of SOC are pre-stored in memory…
It is an object of the present invention to provide a positive electrode for nonaqueous electrolyte secondary batteries that can suppress decreases in the discharge capacity and discharge voltage even when continuous charging is performed at high temperature and that can also suppress decreases in…
A power supply system comprises: a battery pack 44 that outputs at least one of a status signal and an abnormal signal; a switch circuit 30 for connecting a storage battery control group to a power input/output line; and a sub-controller 24 that receives at least one of the status signal and the…
To provide a conductive agent for a nonaqueous electrolyte secondary battery and the like, in which oxidative decomposition reaction of an electrolyte is sufficiently suppressed during charging and discharging under high-temperature, high-voltage conditions and thus the cycle characteristics under…
Provided is a control apparatus for an ancillary service that utilizes storage batteries. The control apparatus (10), which is for controlling charging/discharging between a power storage unit (20) and a power grid (5), and of discharging from the power storage unit (20) to a load (6), allots the…
To stably form a large welding trace (nugget), which is formed inside a positive electrode core exposed part or a negative electrode core exposed part of a rectangular secondary battery, on the collector side. [Solution] A rectangular secondary battery is provided with a negative electrode…
[Problem] To provide an electricity supply system that efficiently utilizes electricity. [Solution] An electricity supply system includes: a power generation unit (10) for supplying electricity; a load unit (11) for consuming at least one of the electricity supplied from the power generation unit…
Provided is a power management system, wherein charging/discharging is conducted while reliably preventing overcharging/over-discharging, and charging/discharging control of a storage-battery system (22) comprising a plurality of storage battery units is conducted. An overall storage-battery-unit…
A power supply system (100) provided with a plurality of battery units (40), a power converter (28) connected to parallel connection lines (L1) and including a bidirectional DC/AC converter circuit or a bidirectional voltage converter circuit, and a master controller (22) for controlling the power…