非水電解質二次電池

SECONDARY BATTERY SYSTEM, AND HYBRID VEHICLE

PROBLEM TO BE SOLVED: To provide a secondary battery system that properly reduces an increased internal resistance of a secondary battery that is caused by occurrence of salt concentration unevenness of an electrolyte solution in an electrode; and to provide a hybrid vehicle. SOLUTION: A control device 30 (charge and discharge controller) of the secondary battery system 6 performs a first pulse charge and discharge that repeats charge and discharge while making a discharge current value greater than a charge current value, with regard to a lithium ion secondary battery 100, wherein an internal resistance value of the lithium ion secondary battery 100 is 1.5 times or more than an initial value of that, an A/B value that is a ratio of a charge current mean value A to a discharge current mean value B is ≥10, and the charge current mean value A is ≥10 C. COPYRIGHT: (C)2011,JPO&INPIT ...

密閉型リチウム二次電池

SEALED TYPE LEAD-ACID BATTERY

PROBLEM TO BE SOLVED: To prevent the short circuit between both electrode plates, by covering both side surfaces in the layered direction of an electrode plate group formed by layering positive electrode plates, negative electrode plates, and separators, with porous mats, when the electrode plates of a grid body having no frame bone on the side surfaces are used. SOLUTION: Between both side surfaces of an electrode plate group formed by layering positive electrode plates 1 and negative electrode plates 2 through separators 3, and a battery jar 4, porous mats 5 are provided, and adhered closely to the inner walls of the jar 4. Normally, the mats 5 are not used on the upper surfaces and the bottom surfaces of the electrode plates. The short circuit between both electrodes which is liable to be generated when a grid body with no frame bone on both side surface is used as at least one side of both electrode plates 1 and 2, especially as the negative electrode plates 2, is prevented by the mats ...

二次電池

二次電池

SEALED SECONDARY CELL

PROBLEM TO BE SOLVED: To provide a sealed secondary cell aiming at an improvement of life property by restraining a dry up of electrolyte liquid. SOLUTION: For the sealed secondary cell housing and sealing a group of electrodes 5 and electrolyte liquid in a cell case 3, a porous body 20 in which, electrolyte liquid is absorbed, is arranged in contact with the group of electrodes 5 in the cell case 3 so as to replenish electrolyte liquid. COPYRIGHT: (C)2003,JPO ...

SEALED LEAD ACID BATTERY

PROBLEM TO BE SOLVED: To provide a sealed lead acid battery with a long life, in which short- circuit hardly occurs. SOLUTION: Positive and negative pole plates 2, 3 are formed with grids in which no framebone exist at both ends. A thermoplastic synthetic resin non- woven cloth 4 with high resistance has a thickness of 0.2mm at a pressure of 20kg/dm2. The synthetic resin non-woven cloth 4 has a hydrophilic surface. It is large enough to wrap the negative pole plate 3, even if folded into a U- shape and has mutually opposite right and left ends thermally sealed to be in a bag shape. A fine glass mat 1 with a thickness of 0.8mm at a pressure of 20kg/dm2 is held between the bag-shaped synthetic resin non-woven cloth 4 and the positive plate, to form a sealed lead acid battery. COPYRIGHT: (C)1998,JPO ...

二次電池