Abstract: An alkaline storage battery of the present invention includes a battery case and a group of electrodes. The battery case is provided with a resin case and a coating layer made of a resin formed on at least one surface selected from an inner surface and an outer surface of the resin case. The hydrogen permeability coefficient of the resin that is the material of the coating layer is 1×10?15 mol·m/m2·sec·Pa or less.

Abstract: A nickel metal hydride storage battery included a battery case, and a group of electrode plates arranged in the battery case, wherein the battery case includes a battery case main body having a hole and a lid for closing the hole. The battery case includes a first portion made of a metal or a laminate of a metal and a resin, and a second portion made of a resin; and an area of the first portion is 20% or more and 90% or less with respect to the entire battery case. Thus, a nickel metal hydride storage battery is capable of controlling the amount of hydrogen permeating the battery case and capable of suppressing the long-term deterioration.

Abstract: An electrode plate unit capable of suppressing the internal short circuit caused by flashing that is formed on the end portion of a positive electrode plate and a battery using the same. The electrode plate unit includes a group of electrode plates in which a plurality of positive electrode plates and a plurality of negative electrode plates are laminated alternately via separators, a positive electrode collector plate connected to one side face of the group of electrode plates for connection to the positive electrode plate, and a negative electrode collector plate connected to another side face of the group of electrode plates for connection to the negative electrode plate, wherein the edge portion of the positive electrode plate is protruded from the edge portion of the negative electrode plate on the entire side face excluding the side face to which the negative electrode collector plate of the group of electrode plates is connected.

Abstract: An electrode plate unit capable of suppressing the internal short circuit caused by flashing that is formed on the end portion of a positive electrode plate and a battery using the same. The electrode plate unit includes a group of electrode plates in which a plurality of positive electrode plates and a plurality of negative electrode plates are laminated alternately via separators, a positive electrode collector plate connected to one side face of the group of electrode plates for connection to the positive electrode plate, and a negative electrode collector plate connected to another side face of the group of electrode plates for connection to the negative electrode plate, wherein the edge portion of the positive electrode plate is protruded from the edge portion of the negative electrode plate on the entire side face excluding the side face to which the negative electrode collector plate of the group of electrode plates is connected.

Abstract: An alkaline storage battery of the present invention includes a battery case and a group of electrodes. The battery case is provided with a resin case and a coating layer made of a resin formed on at least one surface selected from an inner surface and an outer surface of the resin case. The hydrogen permeability coefficient of the resin that is the material of the coating layer is 1×10?15 mol·m/m2·sec·Pa or less.

Abstract: To provide a method of controlling charge and discharge of a secondary battery for automatic guided vehicle that can decide the timing of refresh charge and discharge accurately and minimize the frequency of refresh charge and discharge.

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.

Abstract: On the opposite end walls of a flat, prismatic battery case of a battery module where electrode terminals are attached, protruding components are formed such as to protrude further than the electrode terminals. Terminal holes are formed in the end walls in which the electrode terminals are fitted, and the thickness of the end walls of the integral battery case in the vicinity of the terminal holes is not the same on both sides of each of the terminal holes. Also, one or a plurality of vertical and horizontal ribs are formed on the end walls between the electrode terminals and the protruding components. Further, a sealing structure is included for a battery.

Abstract: A method for recycling a battery pack is provided that enables a degraded battery pack to be replaced at a low cost while maintaining the advantages of a conventional sealed-type nickel-metal hydride secondary battery as being free from maintenance or leak of an electrolyte. The battery pack accommodates a battery module having a plurality of cells, which are a sealed-type nickel-metal hydride secondary battery, combined with each other. When the battery pack is judged as being degraded in a market, the battery pack is collected from the market as a battery to be replaced; a cell or battery module judged as being degraded is renewed by adding an electrolyte thereto; the battery module is installed in the battery pack again; and the battery pack is supplied as a replacement battery.

Abstract: To provide a method of controlling charge and discharge of a secondary battery for automatic guided vehicle that can decide the timing of refresh charge and discharge accurately and minimize the frequency of refresh charge and discharge.

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.

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.

Abstract: A plurality of positive electrode plates and negative electrode plates are stacked alternately upon one another with intervening separators therebetween, wherein 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. Collector plates are brought in tight contact with respective lateral edges of the positive and negative electrode plates, and heat is applied to the collector plate on an opposite surface of the electrode plates from a non-contact type heat source at several locations in lines along a direction in which the electrode plates are stacked.

Abstract: A nickel metal hydride storage battery included a battery case, and a group of electrode plates arranged in the battery case, wherein the battery case includes a battery case main body having a hole and a lid for closing the hole. The battery case includes a first portion made of a metal or a laminate of a metal and a resin, and a second portion made of a resin; and an area of the first portion is 20% or more and 90% or less with respect to the entire battery case. Thus, a nickel metal hydride storage battery is capable of controlling the amount of hydrogen permeating the battery case and capable of suppressing the long-term deterioration.

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.

Abstract: An alkaline storage battery of the present invention includes a battery case and a group of electrodes. The battery case is provided with a resin case and a coating layer made of a resin formed on at least one surface selected from an inner surface and an outer surface of the resin case. The hydrogen permeability coefficient of the resin that is the material of the coating layer is 1×10−15 mol·m/m2·sec·Pa or less.

Abstract: A plurality of positive electrode plates and negative electrode plates are stacked alternately upon one another with intervening separators therebetween, wherein 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. Collector plates are brought in tight contact with respective lateral edges of the positive and negative electrode plates, and heat is applied to the collector plate on an opposite surface of the electrode plates from a non-contact type heat source at several locations in lines along a direction in which the electrode plates are stacked.

Abstract: An electrode plate unit capable of suppressing the internal short circuit caused by flashing that is formed on the end portion of a positive electrode plate and a battery using the same. The electrode plate unit includes a group of electrode plates in which a plurality of positive electrode plates and a plurality of negative electrode plates are laminated alternately via separators, a positive electrode collector plate connected to one side face of the group of electrode plates for connection to the positive electrode plate, and a negative electrode collector plate connected to another side face of the group of electrode plates for connection to the negative electrode plate, wherein the edge portion of the positive electrode plate is protruded from the edge portion of the negative electrode plate on the entire side face excluding the side face to which the negative electrode collector plate of the group of electrode plates is connected.

Abstract: An electrode plate unit capable of suppressing the internal short circuit caused by flashing that is formed on the end portion of a positive electrode plate and a battery using the same. The electrode plate unit includes a group of electrode plates in which a plurality of positive electrode plates and a plurality of negative electrode plates are laminated alternately via separators, a positive electrode collector plate connected to one side face of the group of electrode plates for connection to the positive electrode plate, and a negative electrode collector plate connected to another side face of the group of electrode plates for connection to the negative electrode plate, wherein the edge portion of the positive electrode plate is protruded from the edge portion of the negative electrode plate on the entire side face excluding the side face to which the negative electrode collector plate of the group of electrode plates is connected.

Abstract: An electrode plate unit capable of suppressing the internal short circuit caused by flashing that is formed on the end portion of a positive electrode plate and a battery using the same. The electrode plate unit includes a group of electrode plates in which a plurality of positive electrode plates and a plurality of negative electrode plates are laminated alternately via separators, a positive electrode collector plate connected to one side face of the group of electrode plates for connection to the positive electrode plate, and a negative electrode collector plate connected to another side face of the group of electrode plates for connection to the negative electrode plate, wherein the edge portion of the positive electrode plate is protruded from the edge portion of the negative electrode plate on the entire side face excluding the side face to which the negative electrode collector plate of the group of electrode plates is connected.