Toyota Jidosha Kabushiki Kaisha

Tomohiro Ono

Yuta Nemoto

Toshinori Okura

Masaki Koike

Yoichi Naruse

Tomotaka Hagino

Kaito Matsubara

Naoto Kagami

Kazuyuki Kusama

Youichi Naruse

Rika Shimazaki

Kosuke Nakamura

Takashi Takimoto

Masao Takano

An assembly device for a battery component proposed herein includes at least one of members that are a positioning pin and a chuck, and a suction machine. There is at least one exhaust passage inside the at least one of the members that are the positioning pin and the chuck. An outer peripheral surface of the at least one of the members that are the positioning pin and the chuck has at least one dust-collecting port to which the at least one exhaust passage opens. The at least one exhaust passage is connected to the suction machine.

Assembly device for battery component

The present invention provides a secondary batteryincluding: a battery casehaving a safety valve; an electrode body; an electrolyte; and a cover memberarranged between the safety valveand the electrode bodyso as to be separated from the safety valve. The electrode bodyis housed in the battery caseso that a lamination surface opposes the safety valve. The cover memberis configured to cover a portion of the battery casein which the safety valveis formed in a state where the cover memberholds the lamination surface of the electrode body

Secondary battery

A battery manufacturing method includes assembling an internal terminal, a gasket, a battery case component, an insulator, and an external terminal into a state where a cylindrical part of the gasket is fitted in a mounting hole of the battery case component, a projecting part of the internal terminal is fitted in the cylindrical part of the gasket, the insulator is disposed on an outer surface of the battery case component with the projecting part fitted in a through-hole, and the external terminal is disposed on top of the insulator so as to lie on the projecting part. The external terminal is pressed against the projecting part of the internal terminal, and the external terminal or the internal terminal is vibrated to thereby weld together the projecting part and the external terminal in a solid state.

Battery and battery manufacturing method

A secondary battery according to the present disclosure includes a battery case, an electrode member contained in the battery case, and a lid configured to hermetically seal the battery case. A current-carrying part, which electrically connects a collector terminal of the electrode member with an external electrode terminal, includes a displacement part configured to be displaced outward in response to a rise in an internal pressure of the battery case, the displacement part being connected to at least a part of the collector terminal. When the displacement part is displaced outward in response to the rise in the internal pressure of the battery case, the connection between the displacement part and the collector terminal is disconnected and the current-carrying part is electrically cut off from the collector terminal. In the secondary battery according to the present disclosure, the current-carrying part including the displacement part is disposed in the lid.

A sealed battery includes a battery outer case, a collector terminal, an outwardly exposed terminal, and a current shut-off mechanism configured to cut off a conductive path from the collector terminal to the outwardly exposed terminal when the internal pressure of the battery outer case exceeds a predetermined pressure. The current shut-off mechanism includes a connection plate with a vent hole, and a shut-off valve including a reversing portion. A joint region in the connection plate is in contact with a surface, of the reversing portion, that faces the inner side of the battery outer case. A thermal-spray joint portion configured to cover a border between the joint region and the reversing portion is provided, such that the shut-off valve is joined to the connection plate via the thermal-spray joint portion.

Sealed battery and manufacturing method of sealed battery

In the method for manufacturing a cell according to the present invention, the cell has a cell case, an external terminal, a relay member, and a pressure-type current interrupting mechanism, the method including fixing the relay member and the external terminal to the cell case by caulking the relay member to the external terminal by means of a caulking process. A tubular reinforcing member that is configured with a material harder than that of the relay member is attached to an inner circumferential surface of the tubular shaft portion of the relay member prior to the caulking process, and the caulking process is performed, with the reinforcing member being attached to the inner circumferential surface of the relay member.

Method for manufacturing cell

An assembly device for a battery component proposed herein includes at least one of members that are a positioning pin and a chuck. There is at least one exhaust passage inside the at least one of the members that are the positioning pin and the chuck. An outer peripheral surface of the at least one of the members that are the positioning pin and the chuck has at least one dust-collecting port to which the at least one exhaust passage opens. The at least one exhaust passage is connected to a suction machine.

A region of a hole-inner circumferential surface composing a portion defining a terminal through-hole, the region being located on the battery case cover side, include a tapered surface gradually enlarged in diameter as extending toward the battery case cover side and opening toward the battery case cover side; when riveting is carried out, a region of a shaft portion, the region being located inward of the tapered surface, is enlarged in diameter so as to form an annular projecting portion in contact with the tapered surface; and a hole circumferential portion located around the portion defining the terminal through-hole is held between the external enlarged-diameter portion and the annular projecting portion so as to fix a first terminal member to a second terminal member.

Hermetically sealed battery and manufacturing method for hermetically sealed battery

A sealed-type battery includes an exterior body, a collector terminal, a hollow rivet defining a hollow section, and a reverse plate arranged between the collector terminal and the hollow rivet. The collector terminal includes: a projected section projected; a peripheral edge section provided; and a notch section provided in the peripheral edge section in a manner to surround the projected section and formed in a manner to reduce thickness of the collector terminal. In a projected direction of the projected section, the projected section is thicker than the peripheral edge section. A fitting section, to which the projected section is fitted, is provided in the reverse plate. The sealed-type battery includes a welded section that has a top surface opposing the hollow rivet and that joins the collector terminal and the reverse plate at a position between the projected section and the fitting section.

Sealed-type battery having a current interrupt device

A secondary battery according to an embodiment of the present disclosure includes an external terminal electrically connecting a charge collector disposed inside a battery case with a terminal, a first part electrically connected to the charge collector, a second part electrically connected to the terminal, a first connection part electrically connecting the first part with the second part, and a second connection part electrically connecting the first part with the second part, the second connection part being different from the first connection part. The first connection part is ruptured when a displacement of the displacement part toward the outside of the battery case is transferred to the first connection part, and the second connection part becomes nonconductive when a temperature of the second connection part reaches a predefined temperature.

A first terminal including an insertion hole is placed on one side of a lid of a battery case with one or more insulating materials interposed therebetween. An inner circumferential surface defining the insertion hole includes a first rim and a second rim at a position farther away from the one or more insulating materials than the first rim is. The second rim includes an inclined surface with a recess that includes a bottom at a position set back inside the first terminal from the inclined surface. The second terminal has a shaft part inserted through a mounting hole of the lid and the insertion hole. A leading end of the shaft part is riveted, and at least a portion of the shaft part reaches into the recess.

Sealed battery and sealed battery manufacturing method

A secondary cell manufacturing method includes the steps of: disposing a cap including a magnetic body so as to cover a liquid injection hole provided in a lid member; disposing the lid member so as to cover an opening of an outer case; and bringing close to each other the magnetic body and a magnetic body that applies a magnetic force to the magnetic body, and so holding the position of the cap that is disposed to cover the liquid injection hole by the magnetic force applied from the magnetic body to the magnetic body.

Secondary cell manufacturing method

A sealed battery includes a current-collecting terminal member; a gasket that electrically insulates a lid member and the current-collecting terminal member from each other; and a connection member that connects the current-collecting terminal member and an external terminal member. The connection member and the current-collecting terminal member are connected by swaging the second end of the current-collecting terminal member to an insertion hole of the connection member. The lid member has a lid-side protruded portion that compresses the gasket. The current-collecting terminal member has a terminal-side protruded portion that compresses the gasket. A gasket-side area of the lid-side protruded portion, a gasket-side area of the terminal-side protruded portion, and an area of a surface of the current-collecting terminal member which faces and contacts the gasket, except the terminal-side protruded portion, are different in size from each other.

Sealed battery

The invention provides a manufacturing method of a sealed battery that includes a power generating element, a housing member, a lid member, a collector terminal member, and a first insulating member. This manufacturing method includes compressing the first insulating member with a protruding portion of the lid member. The method includes measuring a position of the lid member and a compression load applied by the lid member, and stopping compressing when a slope of the change in the compression load with respect to the position of the lid member reaches a predetermined value.

Growing community of inventors

Miyoshi, Japan

Tomohiro Ono