Abstract: A first angle (?1) formed between a second straight line (L2) and a third straight line (L3) is more than 55°. A first length (D1) represents a straight line distance between a first point (A) and a second point (B), and a second length (D2) represents a length of a first electrode core body between the first point (A) and the second point (B). On this occasion, the second length (D2) is 1 time or more and 1.1 times or less as large as the first length (D1).

Abstract: A positive electrode terminal is inserted into a current-collector through hole formed in a positive electrode current collector and riveted in a spot-faced hole formed in the positive electrode current collector. A protrusion is formed on a bottom surface of the spot-faced hole so as to extend around the current-collector through hole, and a riveted portion of the positive electrode terminal covers the protrusion. The riveted portion of the positive electrode terminal is weld-connected to an edge of the spot-faced hole.

Abstract: A battery cell includes: a case including a main body provided with an opening, and a sealing plate that seals the main body; an electrode assembly accommodated in the case and having an electrode tab; and a current collector joined to the electrode tabs. The electrode tab has a stacking structure of metal foils, and a plurality of burring-processed portions along a stacking direction of the metal foils are formed in the electrode tab. A laser-welded portion that joins the electrode tab and the current collector is formed at least in a region located between the plurality of burring-processed portions or at least in a region adjacent to the plurality of burring-processed portions.

Abstract: A positive electrode terminal is inserted into a current-collector through hole formed, in a positive electrode current collector and riveted in a spot-faced hole formed in the positive electrode current collector. A protrusion is formed on a bottom surface of the spot-faced hole so as to extend around the current-collector through hole, and a riveted portion of the positive electrode terminal covers the protrusion. The riveted portion of the positive electrode terminal is weld-connected to an edge of the spot-faced hole.

Abstract: Provided is a technique to reduce voids between an electrode tab and a current collecting unit in a portion where the electrode tab and the current collecting unit are welded. The secondary battery manufacturing method disclosed herein is a method of manufacturing a secondary battery including an electrode body having an electrode tab and a current collecting unit electrically connected to the electrode body. This method includes: welding between the electrode tab and the current collecting unit, by sandwiching the electrode tab between a transparent material and the current collecting unit and then applying laser to penetrate the transparent material.

Abstract: A secondary battery production method is provided, with which deformation of a current collector is reduced. The method produces a secondary battery including: an electrode assembly having positive and negative electrode plates; and a positive electrode current collector. The positive electrode plate includes a positive electrode core and a positive electrode active material layer, and the electrode assembly includes a positive electrode core-stacked portion. The method includes: an electrode assembly production step of producing the electrode assembly; and an ultrasonic bonding step of ultrasonically bonding the positive electrode current collector to the positive electrode core-stacked portion. The positive electrode current collector has a thin-walled portion.

Abstract: A first angle (?1) formed between a second straight line (L2) and a third straight line (L3) is more than 55°. A first length (D1) represents a straight line distance between a first point (A) and a second point (B), and a second length (D2) represents a length of a first electrode core body between the first point (A) and the second point (B). On this occasion, the second length (D2) is 1 time or more and 1.1 times or less as large as the first length (D1).

Abstract: A positive electrode terminal is inserted into a current-collector through hole formed, in a positive electrode current collector and riveted in a spot-faced hole formed in the positive electrode current collector. A protrusion is formed on a bottom surface of the spot-faced hole so as to extend around the current-collector through hole, and a riveted portion of the positive electrode terminal covers the protrusion. The riveted portion of the positive electrode terminal is weld-connected to an edge of the spot-faced hole.

Abstract: A secondary battery production method is provided, with which deformation of a current collector is reduced. The method produces a secondary battery including: an electrode assembly having positive and negative electrode plates; and a positive electrode current collector. The positive electrode plate includes a positive electrode core and a positive electrode active material layer, and the electrode assembly includes a positive electrode core-stacked portion. The method includes: an electrode assembly production step of producing the electrode assembly; and an ultrasonic bonding step of ultrasonically bonding the positive electrode current collector to the positive electrode core-stacked portion. The positive electrode current collector has a thin-walled portion.

Abstract: A method of manufacturing a secondary battery including a negative electrode collector connected to a layered negative electrode core body exposed portion by welding, the method including a first step of disposing a core body connection of the negative electrode collector on an outer surface side of a layered negative electrode core body exposed portion so that a recess in the core body connection opposes the layered negative electrode core body exposed portion, a second step of pressing, with a pressing member, a portion in the core body connection where the recess is formed, forming a deformed portion, and contacting the deformed portion to the layered negative electrode core body exposed portion, and a third step of abutting an electrode for resistance welding against the negative electrode collector and resistance welding the negative electrode collector and the layered negative electrode core body exposed portion to each other.

Abstract: A secondary battery includes a positive electrode plate including a positive electrode core body on which a positive electrode active material layer is formed and a positive electrode current collector joined to the positive electrode core body. The layered positive electrode core body includes a joined portion joined to a positive electrode current collector. When the product of the thickness of one layer of a portion of the positive electrode core body not joined to the positive electrode current collector and the number of layers of the positive electrode core body at the joined portion is Tp1, the joined portion includes a first region having a thickness less than Tp1 and a second region having a thickness more than Tp1 in a layered direction of the positive electrode core body.

Abstract: A prismatic secondary battery includes an electrode assembly, a casing having an opening, a sealing plate sealing the opening, a terminal connected to an electrode that constitutes the electrode assembly, and a current collector connected to the electrode. The current collector has a base portion located along the sealing plate and a lead portion extending from an end portion of the base portion toward a bottom of the casing. The base portion is welded to the terminal. The lead portion is connected to a substrate exposure portion of the electrode and has a fusible portion that is fusible by an excessive current and that has a smallest cross section compared to the remaining portion. The fusible portion has a cross section equal to or smaller than 92% of a cross section of the base portion that passes through an end portion of a weld-connection portion closer to the lead portion.

Abstract: A method of manufacturing a secondary battery including a negative electrode collector connected to a layered negative electrode core body exposed portion by welding, the method including a first step of disposing a core body connection of the negative electrode collector on an outer surface side of a layered negative electrode core body exposed portion so that a recess in the core body connection opposes the layered negative electrode core body exposed portion, a second step of pressing, with a pressing member, a portion in the core body connection where the recess is formed, forming a deformed portion, and contacting the deformed portion to the layered negative electrode core body exposed portion, and a third step of abutting an electrode for resistance welding against the negative electrode collector and resistance welding the negative electrode collector and the layered negative electrode core body exposed portion to each other.

Abstract: The container unit type cogeneration engine generator comprises a long generator container in which an engine and components on a generator main body side including a generator driven by the engine are accommodated, and a short exhaust heat utilizing container in which a boiler that generates steam and hot water for hot-water supply by utilizing exhaust heat of the engine and an exhaust heat utilizing apparatus including a heat exchanger are accommodated. A combination container unit is configured so that shorter walls on one end side of the both containers in a longer direction are positioned on a same straight line, and making both longer walls of the long generator container and the short exhaust heat utilizing container to face each other. Both containers are coupled with a plurality of pipes along the shorter direction of the containers across the facing walls along which the both containers are arranged.

Abstract: A prismatic secondary battery includes an electrode assembly, a casing having an opening, a sealing plate sealing the opening, a terminal connected to an electrode that constitutes the electrode assembly, and a current collector connected to the electrode. The current collector has a base portion located along the sealing plate and a lead portion extending from an end portion of the base portion toward a bottom of the casing. The base portion is welded to the terminal. The lead portion is connected to a substrate exposure portion of the electrode and has a fusible portion that is fusible by an excessive current and that has a smallest cross section compared to the remaining portion. The fusible portion has a cross section equal to or smaller than 92% of a cross section of the base portion that passes through an end portion of a weld-connection portion closer to the lead portion.

Abstract: A short waste-heat reuse container disposed adjacent to a 40-f container that contains a radiator 23, an engine 21, and a power generator 22 disposed in a longitudinal direction of the container, the waste-heat reuse container collecting waste heat of the engine and generating steam or hot water, the waste-heat reuse container containing a muffler 2 that muffles exhaust gas of the engine, a boiler 4 that transfers heat of the exhaust gas to water and generates steam, and a heat exchanger 3 that transfers heat of cooling water heated by the engine to water and generates hot water, wherein the muffler is disposed upright opposite to the boiler in the longitudinal direction of the waste-heat reuse container, an exhaust gas inlet 2a of the muffler being disposed on an upper wall of the container.

Abstract: The container unit type cogeneration-using engine generator device is composed of a combination of a long generator container 20 in which an engine 21 and components on a generator main body side including a generator 22 driven by the engine are accommodated, and a short exhaust heat utilizing container in which a boiler 4 that generates steam and hot water for hot-water supply by utilizing exhaust heat of the engine and an exhaust heat utilizing apparatus including a heat exchanger 3 are accommodate. A combination container unit is configured by setting a reference surface A so that shorter walls on one end side of the both containers in a longer direction are respectively positioned on a same straight line, and making both longer walls of the long generator container and the short exhaust heat utilizing container to face each other and arranging the respective containers in parallel with longer direction across the facing walls 1b/20b by making the reference surface as a reference.

Abstract: The present invention obtains an engine generator device including: a longer generator container that houses a generator functional portion including an engine and a generator driven by the engine; and a shorter exhaust heat utilization container that houses a boiler utilizing the exhaust heat of the engine, and a heat exchanger. By effective utilization of the containers and by effective connection between the two containers, pipe and cable arrangement is not necessary. Further, by saving space, maintainability after the assembling is satisfactory.

Abstract: A short waste-heat reuse container disposed adjacent to a 40-f container that contains a radiator 23, an engine 21, and a power generator 22 disposed in a longitudinal direction of the container, the waste-heat reuse container collecting waste heat of the engine and generating steam or hot water, the waste-heat reuse container containing a muffler 2 that muffles exhaust gas of the engine, a boiler 4 that transfers heat of the exhaust gas to water and generates steam, and a heat exchanger 3 that transfers heat of cooling water heated by the engine to water and generates hot water, wherein the muffler is disposed upright opposite to the boiler in the longitudinal direction of the waste-heat reuse container, an exhaust gas inlet 2a of the muffler being disposed on an upper wall of the container.

Abstract: Provided is a sealed battery that can offer excellent battery performances by having its electrode terminal and a current collector securely welded to each other, and its manufacturing method. The sealed battery is formed by hermetically sealing a casing storing an electrode assembly and the current collector, wherein: the electrode assembly formed by layering positive and negative electrode plates with a separator sandwiched therebetween is electrically connected to the current collector; and a shaft portion of the electrode terminal penetrates through the current collector. A part of the electrode terminal projecting out from a pass-through of the current collector is a (conical) frustum-shaped portion whose bottom base is in contact with the current collector. The frustum-shaped portion is pressed against the current collector, and the frustum-shaped portion and the current collector are welded together in at least one area on a perimeter of the bottom base of the frustum-shaped portion.