Toyota Jidosha Kabushiki Kaisha

Tomoharu Sasaoka

Norihiro Ose

Kengo Haga

Hajime Hasegawa

Kazuhito Kato

Daichi Kosaka

A method is provided for preparing an all-solid battery that at least includes a negative electrode layer containing a negative electrode active material and a sulfide solid electrolyte, and a negative electrode current collector containing a metal that is in contact with the negative electrode layer and can react with the sulfide solid electrolyte, in which a sulfur compound generated by a reaction of the metal contained in the negative electrode current collector and the sulfide solid electrolyte contained in the negative electrode layer is not present in a contact portion of the negative electrode layer and the negative electrode current collector.

All-solid battery and method for manufacturing the same

A solid-state battery comprising a stack including at least one unit cell including a positive electrode layer including a positive electrode active material, a negative electrode layer including a negative electrode active material, and a solid electrolyte layer laminated between the positive and negative electrode layers, and an outer covering accommodating the stack, wherein the solid-state battery further including a pressure receiving member provided on at least a part of a periphery of the outer covering, and wherein the pressure receiving member has a thickness of less than a total thickness of the stack and the outer covering in a stacking direction of the unit cell.

Solid-state battery and method for producing the same, and assembled battery and method for producing the same

A manufacturing method of an all-solid battery includes fabricating a single battery including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer arranged between the positive electrode layer and the negative electrode layer; fabricating a plurality of battery packs including the plurality of single batteries; confining a plurality of battery packs by an equal confining pressure; measuring the electrical characteristics of the plurality of confined battery packs; determining the battery pack whose measured electrical characteristics are the worst of the plurality of battery packs; reducing the confining pressures of the other battery packs so that the electrical characteristics of the other battery packs are equal to that of the battery pack whose electrical characteristics have been determined to be the worst; and electrically connecting in parallel the battery packs.

Manufacturing method of all-solid battery

An objective of the present invention is to provide a charging system, capable of increasing the rapid charging capacity of an on-vehicle all-solid-state battery, and reducing the effect of confining pressure on the all-solid-state battery. This is achieved by a charging system for an all-solid-state battery to be mounted in a vehicle, the charging system comprising: a charging section that charges an all-solid-state battery, a pressing section that applies confining pressure to the all-solid-state battery, and a pressure control section that controls the confining pressure, wherein the pressure control section directs the pressing section so that the confining pressure during charging is higher than the confining pressure during discharging.

Charging system for all-solid-state battery

In a process of manufacturing a membrane electrode assembly, seal-material flow holes () in the form of through-holes are formed, separately from manifold holes (-), in the membrane electrode assembly prior to injection molding. When the membrane electrode assembly is placed in a mold for injection molding, the seal-material flow hole () is located in a cavity (). When a seal material is supplied from a supply port () formed at a location where the manifold hole () is formed, the seal material that flows toward the upper die () passes the seal-material flow hole () in the cavity (), and then flows toward the lower die (), so as to reduce the unevenness between the amounts of supply of the seal material to the upper die () and the lower die ().

Method of manufacturing seal-integrated type membrane electrode assembly

A fuel cell separator is provided with a separator substrate made of metal which has at least one open portion through which a fluid can pass provided in a predetermined position, and a film coating member that coats a predetermined area including the open portion of the separator substrate. A portion of the film coating member that corresponds to at least a peripheral edge portion of the open portion is adhesion treated.

Growing community of inventors

Hadano, Japan

Tomoharu Sasaoka