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1
US6835501B2
Publication/Patent Number: US6835501B2
Publication date: 2004-12-28
Application number: 10/142,157
Filing date: 2002-05-10
Abstract: An alkaline rechargeable battery, having an electrode plate group including positive electrode plates and negative electrode plates stacked alternately with separators interposed therebetween, arranged in such a manner that a volume of the separators before the initial charge and discharge accounts for 30 to 60% of a volume of the electrode plate group. An alkaline rechargeable battery, having an electrode plate group including positive electrode plates and negative electrode plates stacked alternately with separators interposed therebetween, arranged in such a manner that a volume of the separators before the initial charge ...more ...less
2
US20040219429A1
Publication/Patent Number: US20040219429A1
Publication date: 2004-11-04
Application number: 10/856,822
Filing date: 2004-06-01
Abstract: A negative electrode of a battery, chiefly includes hydrogen absorption alloy particles each having a surface layer. The alloy particles satisfy R2/R1≧0.004 and 5 &mgr;m≦R1≦20 &mgr;m, or preferably 5 &mgr;m≦R1≦12.5 &mgr;m, where R1 is a half of a median diameter of the particles and R2 is thickness of the surface layers. A negative electrode of a battery, chiefly includes hydrogen absorption alloy particles each having a surface layer. The alloy particles satisfy R2/R1≧0.004 and 5 &mgr;m≦R1≦20 &mgr;m, or preferably 5 &mgr;m≦R1≦12.5 &mgr;m, where R1 is a half of a median diameter ...more ...less
3
US6808549B2
Publication/Patent Number: US6808549B2
Publication date: 2004-10-26
Application number: 10/145,700
Filing date: 2002-05-16
Abstract: A negative electrode of a battery, chiefly includes hydrogen absorption alloy particles each having a surface layer. The alloy particles satisfy R2/R1≧0.004 and 5 &mgr;m≦R1≦20 &mgr;m, or preferably 5 &mgr;m≦R1≦12.5 &mgr;m, where R1 is a half of a median diameter of the particles and R2 is thickness of the surface layers. A negative electrode of a battery, chiefly includes hydrogen absorption alloy particles each having a surface layer. The alloy particles satisfy R2/R1≧0.004 and 5 &mgr;m≦R1≦20 &mgr;m, or preferably 5 &mgr;m≦R1≦12.5 &mgr;m, where R1 is a half of a median diameter ...more ...less
4
US6713211B2
Publication/Patent Number: US6713211B2
Publication date: 2004-03-30
Application number: 09/815,684
Filing date: 2001-03-23
Abstract: A square shaped battery includes: an electrode plate group including a belt-like positive electrode plate, a belt-like negative electrode plate, and a belt-like separator, the belt-like positive electrode plate, the belt-like negative electrode plate, and the belt-like separator being laminated and rolled up to form the electrode plate group; and a pair of power collectors disposed on sides of the electrode plate group for collecting electric power from the electrode plate group. A square shaped battery includes: an electrode plate group including a belt-like positive electrode plate, a belt-like negative electrode plate, and a belt-like separator, the belt-like positive electrode plate, the belt-like negative electrode plate, and the belt-like separator ...more ...less
5
US20040229121A1
Publication/Patent Number: US20040229121A1
Publication date: 2004-11-18
Application number: 10/873,184
Filing date: 2004-06-23
Abstract: A group of electrodes are accommodated in a prismatic cell case of a rechargeable battery. Intervening separators are provided between positive and negative electrode plates arranged alternately in parallel to long lateral walls of the cell case. The positive electrode plates each include a lead portion having a surface on which at least one lead plate is attached. Lateral edges of the positive electrode plates protrude beyond the negative electrode plates on one side, and lateral edges of the negative electrode plates protrude beyond the group of positive electrode plates on the opposite side. The protruding portions form the lead portions. Upper open ends of the cell cases are closed by an integral lid member. A group of electrodes are accommodated in a prismatic cell case of a rechargeable battery. Intervening separators are provided between positive and negative electrode plates arranged alternately in parallel to long lateral walls of the cell case. The positive electrode plates ...more ...less
6
US6821673B1
Publication/Patent Number: US6821673B1
Publication date: 2004-11-23
Application number: 09/614,769
Filing date: 2000-07-12
Abstract: In each of the cells that constitute an battery module, a plurality of positive electrode plates and negative electrode plates are layered parallel to the long lateral walls of prismatic cell cases with intervening separators therebetween, wherein lateral edge portions of the positive electrode plates protrude beyond the negative electrode plates on one side, and lateral edge portions of the negative electrode plates protrude beyond the group of positive electrode plates on the opposite side, the protruding portions forming lead portions. In each of the cells that constitute an battery module, a plurality of positive electrode plates and negative electrode plates are layered parallel to the long lateral walls of prismatic cell cases with intervening separators therebetween, wherein lateral edge portions of the ...more ...less
7
US6780538B2
Publication/Patent Number: US6780538B2
Publication date: 2004-08-24
Application number: 10/455,345
Filing date: 2003-06-06
Abstract: A battery module is provided which includes multiple rechargeable batteries coupled together. The battery module includes multiple prismatic cell cases having short lateral walls and long lateral walls arranged side by side. Adjacent short lateral walls are integral with each other. The battery module includes holes extending through the short lateral walls of the cell cases at upper edge portions. The battery module also includes a pair of frame fittings that have base ends and protruding portions in each of the cell cases for connecting two adjacent cell cases. The protruding portions of the pair of frame fittings extend into the through holes in the upper edge portions of the short lateral walls of the cell cases from both sides and are welded together. Positive and negative electrode collector plates in the cell cases are respectively attached to the base ends of the frame fittings. End frame fittings that have base ends and protruding portions for cell cases are located at both outer ends of the rechargeable battery for connecting the cell cases to outside terminals. Connection terminals that have protruding portions are connected to the end frame fittings at both outer ends of the rechargeable battery. A battery module is provided which includes multiple rechargeable batteries coupled together. The battery module includes multiple prismatic cell cases having short lateral walls and long lateral walls arranged side by side. Adjacent short lateral walls are integral with each ...more ...less
8
US6661201B2
Publication/Patent Number: US6661201B2
Publication date: 2003-12-09
Application number: 10/175,437
Filing date: 2002-06-18
Abstract: The present invention provides a method for controlling battery charging and discharging in which a battery is charged and discharged such that a SOC (state of charge) value of the battery is increased/decreased to a predetermined range when the SOC value of the battery is in a predetermined range; and a range of the SOC values in which charging and discharging processes are performed sequentially varies and a range of the SOC values after the charging and discharging processes also sequentially varies. The present invention provides a method for controlling battery charging and discharging in which a battery is charged and discharged such that a SOC (state of charge) value of the battery is increased/decreased to a predetermined range when the SOC value of the battery is in a ...more ...less
9
US20030013020A1
Publication/Patent Number: US20030013020A1
Publication date: 2003-01-16
Application number: 10/150,788
Filing date: 2002-05-17
Abstract: An electrode plate for an alkaline storage battery of the present invention includes a conductive core material as a current collector, in which a plurality of through-holes are linearly provided in the core material so as to be parallel to a longitudinal direction of the core material, each through-hole having an aperture area of 10 mm2 or less and at least two pairs of opposite sides parallel to each other. An electrode plate for an alkaline storage battery of the present invention includes a conductive core material as a current collector, in which a plurality of through-holes are linearly provided in the core material so as to be parallel to a longitudinal direction of the core ...more ...less
10
US20030001541A1
Publication/Patent Number: US20030001541A1
Publication date: 2003-01-02
Application number: 10/175,437
Filing date: 2002-06-18
Abstract: The present invention provides a method for controlling battery charging and discharging in which a battery is charged and discharged such that a SOC (state of charge) value of the battery is increased/decreased to a predetermined range when the SOC value of the battery is in a predetermined range; and a range of the SOC values in which charging and discharging processes are performed sequentially varies and a range of the SOC values after the charging and discharging processes also sequentially varies. The present invention provides a method for controlling battery charging and discharging in which a battery is charged and discharged such that a SOC (state of charge) value of the battery is increased/decreased to a predetermined range when the SOC value of the battery is in a ...more ...less
11
US6605387B1
Publication/Patent Number: US6605387B1
Publication date: 2003-08-12
Application number: 09/704,047
Filing date: 2000-11-02
Abstract: An alkaline storage battery of the present invention has a negative electrode comprising an AB5 type hydrogen storage alloy containing at least nickel as B element. The hydrogen storage alloy contains 1.5 to 5.0% by weight of a magnetic substance comprising metallic nickel. The above-mentioned alkaline storage battery can effect high output from the initial stage of charging and discharging cycles. An alkaline storage battery of the present invention has a negative electrode comprising an AB5 type hydrogen storage alloy containing at least nickel as B element. The hydrogen storage alloy contains 1.5 to 5.0% by weight of a magnetic substance comprising metallic nickel. The ...more ...less
12
US6608465B2
Publication/Patent Number: US6608465B2
Publication date: 2003-08-19
Application number: 10/284,653
Filing date: 2002-10-30
Abstract: A positive electrode for an alkaline storage battery having a high capacity and facilitating the manufacturing thereof and an alkaline storage battery using the same are provided. The positive electrode utilized includes active material powder containing nickel hydroxide and powder made of cobalt compounds, where a ratio of a cobalt compound with a valence of cobalt being 2.6 or more to the whole of cobalt compounds is 30 weight % or more. A positive electrode for an alkaline storage battery having a high capacity and facilitating the manufacturing thereof and an alkaline storage battery using the same are provided. The positive electrode utilized includes active material powder containing nickel hydroxide and ...more ...less
13
US20030108791A1
Publication/Patent Number: US20030108791A1
Publication date: 2003-06-12
Application number: 10/284,653
Filing date: 2002-10-30
Abstract: A positive electrode for an alkaline storage battery having a high capacity and facilitating the manufacturing thereof and an alkaline storage battery using the same are provided. The positive electrode utilized includes active material powder containing nickel hydroxide and powder made of cobalt compounds, where a ratio of a cobalt compound with a valence of cobalt being 2.6 or more to the whole of cobalt compounds is 30 weight % or more. A positive electrode for an alkaline storage battery having a high capacity and facilitating the manufacturing thereof and an alkaline storage battery using the same are provided. The positive electrode utilized includes active material powder containing nickel hydroxide and ...more ...less
14
US6582483B2
Publication/Patent Number: US6582483B2
Publication date: 2003-06-24
Application number: 09/851,288
Filing date: 2001-05-08
Abstract: A method for manufacturing a positive electrode for an alkaline storage battery that achieves excellent filing characteristics for an active material for the positive electrode and longer lifetime of the battery is provided. The method includes a first process of filling a paste of the active material for the positive electrode in a first porous metal sheet provided with a plurality of oblate pores whose major axes are arranged substantially in one direction, and a second process of pressing the first porous metal sheet that has undergone the first process using a roller press such that the one direction and a direction of a rotation axis of a roller in the roller press substantially are parallel, so as to produce a positive electrode sheet provided with a second porous metal sheet. In the second porous metal sheet, a value obtained by dividing a length of the pores in the one direction by that of the pores in a direction perpendicular to the one direction and parallel to a surface of the second porous metal sheet averages in the range of 0.9 to 1.1. A method for manufacturing a positive electrode for an alkaline storage battery that achieves excellent filing characteristics for an active material for the positive electrode and longer lifetime of the battery is provided. The method includes a first process of filling a paste ...more ...less
15
US20030203278A1
Publication/Patent Number: US20030203278A1
Publication date: 2003-10-30
Application number: 10/455,345
Filing date: 2003-06-06
Abstract: In each of the cells of a battery module, multiple positive electrode plates and multiple negative electrode plates are layered, each of the cells has short lateral walls and long lateral walls intervening separators are provided between the positive and negative electrodes, parallel to the long lateral walls of prismatic cell cases. Lateral edge portions of the positive electrode plates protrude beyond the group of negative electrode plates on one side, and lateral edge portions of the negative electrode plates protrude beyond the group of positive electrode plates on the opposite side. The cells are arranged side by side with adjacent short lateral walls that are integral with each other. Upper open ends of the cell cases are integrally closed with a single lid member. In each of the cells of a battery module, multiple positive electrode plates and multiple negative electrode plates are layered, each of the cells has short lateral walls and long lateral walls intervening separators are provided between the positive and negative electrodes ...more ...less
17
US20020132166A1
Publication/Patent Number: US20020132166A1
Publication date: 2002-09-19
Application number: 10/067,472
Filing date: 2002-02-05
Abstract: Disclosed is an active material for constituting a nickel electrode for alkaline storage batteries which has a high utilization at high ambient temperatures and therefore realizes a battery of higher energy density and a longer cycle life. The nickel electrode active material comprises a nickel hydroxide powder prepared from nickel sulfate and contains SO42− at 0.4 wt % or less in the crystal of the powder. The nickel hydroxide is preferably solid solution nickel hydroxide incorporating therein at least one element selected from the group consisting of cobalt, cadmium, zinc and magnesium. Disclosed is an active material for constituting a nickel electrode for alkaline storage batteries which has a high utilization at high ambient temperatures and therefore realizes a battery of higher energy density and a longer cycle life. The nickel electrode active material ...more ...less
18
US20020022179A1
Publication/Patent Number: US20020022179A1
Publication date: 2002-02-21
Application number: 09/848,732
Filing date: 2001-05-03
Abstract: A rectangular alkaline storage battery includes a plurality of rectangular positive electrode plates, negative electrode plates, and separators. The positive and negative electrode plates are layered alternately via the separators, resulting in a group of electrode plates. The group of electrode plates, together with an alkaline electrolyte, is housed in a rectangular container. In the battery, internal resistance is 5 m&OHgr; or less, the electrode plate group thickness is 30 mm or less, and the amount of electrolyte is 1.3 to 8.0 g/Ah. This can achieve a rectangular alkaline storage battery that provides the optimum balance in the quantity of heat generation, heat release, and heat accumulation, high power, and excellent battery characteristics even when charged/discharged repeatedly and used for a long time. A rectangular alkaline storage battery includes a plurality of rectangular positive electrode plates, negative electrode plates, and separators. The positive and negative electrode plates are layered alternately via the separators, resulting in a group of electrode plates. The ...more ...less
19
US20020012847A1
Publication/Patent Number: US20020012847A1
Publication date: 2002-01-31
Application number: 09/851,288
Filing date: 2001-05-08