A secondary battery module including a plurality of unit batteries that each include a cap plate and a case connected to either one of a positive electrode and a negative electrode of an electrode assembly and an electrode terminal connected to the other of the positive electrode and negative electrode, wherein the electrode terminal protrudes outside of a unit battery by passing through the cap plate covering the case, and a connector having a first end and a second end, wherein the first end fits on the electrode terminal of one of the unit batteries and is screw-engaged to the electrode terminal by a nut and the second end is connected to the case of another adjacent unit battery.

Secondary battery module

A charging system for simultaneously charging the batteries of a plurality of battery powered vehicles. The charging includes one or more DC-DC power converters having one or more charging ports configured to plug into the batteries. The DC-DC power converters are each configured to selectively connect to more than one charging port to selectively provide for higher port power levels. The DC-DC power converters connect to an AC rectifier through a DC bus. The AC rectifier connects to an AC power source having a limited power rating. The AC charging system also has a controller that controls the operation of the DC-DC power converters such that the total power draw on the AC rectifier does not exceed the power rating. The system is further configured such that the DC-DC power converters can drain selected batteries to obtain power for charging other batteries, thus allowing for batteries to be cycled.

Battery charging system and method

A high capacity lithium secondary battery with excellent safety is provided by suppressing expansion of a negative electrode active material during charge and increasing the content of a heat-resistant resin in a separator relative to conventional one. The lithium secondary battery includes: a negative electrode active material that comprises compound particles containing at least one metal element selected from the group consisting of Si, Sn, Al, and Zn; and a separator that has a first porous layer comprising polyolefin and a second porous layer comprising a heat-resistant resin. The separator contains 10 to 60 parts by weight of the second porous layer per 100 parts by weight of the first porous layer.

Lithium Secondary Battery

An object of the invention is to provide a separator for a nonaqueous secondary battery, which has good adhesion to electrodes and is also capable of ensuring sufficient ion permeability even after attachment to electrodes. The separator for a nonaqueous secondary battery of the invention includes a porous substrate and an adhesive porous layer that is formed on at least one side of the porous substrate and contains a polyvinylidene-fluoride-based resin. The separator for a nonaqueous secondary battery is characterized in that the adhesive porous layer has a crystal size of 1 to 13 nm.

Separator for nonaqueous secondary battery, and nonaqueous secondary battery

A subject for the invention is to improve the cycle characteristics of a high-capacity secondary battery containing an active material packed at a high density, by using a particulate active material having a low aspect ratio. The invention relates to a nonaqueous-electrolyte secondary battery comprising a negative electrode and a positive electrode each capable of occluding/releasing lithium, a separator, and a nonaqueous electrolyte solution comprising a nonaqueous solvent and a lithium salt, characterized in that the separator comprises a porous film made of a thermoplastic resin containing an inorganic filler, and at least either of the following is satisfied: the active material contained in the negative electrode is a particulate active material having an aspect ratio of from 1.02 to 3; and the active material contained in the positive electrode is a particulate active material having an aspect ratio of from 1.02 to 2.2.

Nonaqueous electrolyte secondary battery

PROBLEM TO BE SOLVED: To use a secondary battery as a power storage for accumulating inexpensive nighttime power at a home as well as a power source of an electric car by controlling the charge and discharge of the secondary battery in the electric car. SOLUTION: The power control system comprises the electric car 1 having the secondary battery 2, and a control box 3 that is connected to a power feed system and the power system in a building 4, can be connected to the secondary battery 2 in the electric car 1, and supplies power that is fed from the power feed system to the power system in the building 4. The control box 3 is connected to the electric car 1. The power control system supplies the battery power in the secondary battery 2 to the power system in the building 4 when the amount of charge in the secondary battery 2 exceeds a preset reference remainder, and charges the secondary battery 2 using the power that is fed from the power feed system when the amount of charge in the secondary battery 2 is less than the reference remainder. COPYRIGHT: (C)2002,JPO

Power control system

PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery that has high energy density SOLUTION: This nonaqueous electrolyte secondary battery comprises an positive electrode made of an positive pole complex material 4, in which powder of a lithium-manganese complex oxide is molded into a plate-shape or a sheet- shape, a negative electrode 3 consisting of a negative pole complex material 8, in which a powder of a carbon material is molded into molded into a plate- shape or a sheet-shape and a metallic lithium foil 9 jointed on the surface of the negative pole complex material 8, and a nonaqueous electrolyte

PROBLEM TO BE SOLVED: To fully exhibit a storage and discharge capacity of individual storage apparatus by performing supplying of power more efficiently, while securing both the life time and the requested quantity of power. SOLUTION: This controller sets and updates the discharge level of stopping the discharge of each condenser 1, according to the deterioration state or usage period of each condenser, and performs discharge control of each storage apparatus, based on this discharge level. COPYRIGHT: (C)2003,JPO

Charge and discharge controller for storage apparatus, charge and discharge control method, and power storage system

PROBLEM TO BE SOLVED: To effectively perform the output to a power system as the whole hybrid distributed power system, by making effective use of the quantity of power of a storage unit, in the region of residual capacity where a storage unit does not fall in overcharge or overdischarge, by performing the control of placing priority on the power supply to the system for the purpose of protection of the storage device. SOLUTION: This is a power storage device 1 which supplies a power system 4 with power so as to suppress the output ripple of a distributed power source 2, being connected between the distributed power source 2 and the power system 4. The power storage device is equipped with a power conversion mechanism 12 which performs the charge and discharge of an accumulator 11, on the basis of the converter power command given from a controller 13. The controller 13 possesses a charge/discharge command setter 23 which sets the charge/discharge command to bring the charge state of the accumulator 11 close to the target charge state, and a converter power command setter 24 which sets a converter power command on the basis of the charge/discharge command set by the charge/discharge command setter 23, the target supply power to be supplied to the power system 4, and the output power of the distributed power source 2. COPYRIGHT: (C)2006,JPO&NCIPI

Power storage device and hybrid distributed power system

PROBLEM TO BE SOLVED: To provide an electric power storage system of which manufacturing cost can be reduced greatly. SOLUTION: This is an electric power storage system 1 which has in a case 6 an electric chamber 4 in which a power conversion device and a protection circuit are housed and a battery chamber 5 in which a plurality of modules of batteries housing at least one secondary battery in a case are housed. At least one suction port 12 and at least one exhaust port are provided in the above case 6, and at least one passage R for communicating the suction port 12 and the exhaust port is formed in the case 6, and furthermore at least one fan 15 is installed in each passage R. COPYRIGHT: (C)2005,JPO&NCIPI

英彦田島

Papers

Power control system

Nonaqueous electrolyte secondary battery

Charge and discharge controller for storage apparatus, charge and discharge control method, and power storage system

Power storage device and hybrid distributed power system

Electric power storage system

英彦 田島

Papers

Power control system

Nonaqueous electrolyte secondary battery

Charge and discharge controller for storage apparatus, charge and discharge control method, and power storage system

Power storage device and hybrid distributed power system

Electric power storage system

英彦田島