Nissan Motor Company Limited

Automotive Energy Supply Corporation

Fujitsu Telecom Networks Limited

Envision Aesc Japan Ltd.

Fujitsu Telecom Networks Fukushima Limited

Takeshi Yasooka

Shinichi Tasaki

Daisuke Iga

Yoshikazu Niwa

Chika Amemiya

Takashi Nishihara

Tsutomu Okazaki

Takahiro Kawasaki

Takeshi Sato

Hiroki Fujiwara

Hiroshi Ishikawa

Takuya Takatsuka

Toshihiko Kamiya

Asako Kawashima

Itaru Tamura

Hiroaki Habe

Tomohiro Kitayama

Shunji Noda

Akira Suzuka

Mitiyuki Tezuka

Tomoyuki Nagaoka

Atsushi Kamata

A method for producing cell, which includes cell elementwherein positive electrode plateand negative electrode plateare laminated with an interposal of separatortherebetween; and outer casewhich houses cell elementtogether with an electrolyte solution. An electrolyte solution injection step for forming cellby having outer casecontain cell elementand electrolyte solution (step S), a charging step for charging cell(step S), and an impregnation condition inspection step for inspecting an impregnation condition of the electrolyte solution into cell elementafter charging cellare conducted in the order of the electrolyte solution injection step, the charging step and the impregnation condition inspection step.

Method for producing cell including electrolyte impregnation inspection and pressurization

A battery pressing device includes a roller and a transport device. The roller is configured to rotate at a rotational speed when pressing a battery cell in which is disposed a battery element having electrodes and separators layered inside an external packaging. The transport mechanism is configured to transport the battery cell at a transport speed that is synchronized with the rotational speed of the roller when the battery cell is being pressed by the roller.

Battery pressing device and battery pressing method

A battery cell storage apparatus includes a plurality of sheet-formed middle plates, a plurality of middle plate holding members and a fixing member. The plurality of sheet-formed middle plates are aligned so as to store flat cells therebetween. The plurality of middle plate holding members are aligned in a direction of alignment of the sheet-formed middle plates, and each sheet-formed middle plate holding member of the plurality of middle plate holding members holding a respective sheet-formed middle plate of the plurality of sheet-formed middle plates in a direction perpendicular to the direction of alignment. The fixing member is configured to fix the flat cells stored between the sheet-formed middle plates by sandwiching the flat cells together with the sheet-formed middle plates.

Battery cell storage apparatus and storage apparatus transport system

According to the present invention, there is provided a seal step (ST) storing an electrode laminate in which a separator is disposed between a positive electrode and a negative electrode and an electrolyte within an exterior body constituted by a laminate film and sealing the exterior body; a pressure application step (ST) of applying a pressure to the exterior body in which the electrode laminate is stored by means of a flat plate press working or so forth; charge step (ST) of charging up to a full charge; a gas removal step (ST) of unsealing the exterior body and removing gas generated within the exterior body at the charge step; and a re-seal step (ST) of sealing the exterior body after the gas removal step. The number of times of the gas removal steps is small and an influence of gas on battery characteristics is suppressed.

Production method for non-aqueous electrolyte secondary battery

A battery pressing device for pressing a battery cell, the battery cell including an external casing, an electrolyte, a battery element in which electrodes and a separator are arranged in layers in the external casing, electrode terminals extending out of the external casing from an end of the battery element, and an insulating member for preventing short-circuiting of the electrode terminals attached to the electrode terminals inside the external casing, the battery pressing device includes a pressing member configured to press the battery cell in a layering direction of the battery element over a region so as to avoid pressing the insulating member inside the external casing.

A battery reinforcement method for reinforcing a rectangular battery cell in which a battery element is disposed in a rectangular external packaging, the method includes enclosing the battery element between two rectangular external packaging sheets and sealing the rectangular external packaging sheets with a sealing part that extends along edges of the rectangular external packaging sheets so as to form the rectangular external packaging, and forming a reinforcing part outside of the sealing part on the rectangular external packaging.

Battery reinforcement method

A soft packaged sealed battery is contained in an airtight container. The airtight container is decompressed and images of the surface shape of the sealed battery in the airtight container before and after decompression are captured by a CCD camera or the like. Whether or not airtightness of the sealed battery is maintained is determined based on a change in the captured images, e.g. a change in the surface shape appearing as luminance differences of pixels. By this determination method, highly accurate airtightness determination is realized by eliminating the influence of invisible fine creases on a sealed battery surface.

Airtightness inspection method and airtightness inspection apparatus for sealed battery

The present invention relates to a chuck mechanism of a charge-discharge test device for a thin secondary battery, and aims to provide a chuck mechanism having excellent action controllability. The chuck mechanism includes: a chuck drive part which is movable in a direction toward a battery container housing a thin secondary battery; and a chuck activation part which is located away from the chuck drive part in the direction toward the battery container and whose movement in the same direction is restricted. In the chuck mechanism, when the chuck unit is moved in the direction toward the battery container, the chuck drive part activates a chuck member of the chuck activation part whose movement in the same direction is restricted.

Chuck mechanism of charge-discharge test device for thin secondary battery

A pitch conversion device and pitch conversion method is directed to convert the pitch of a plurality of partition members arranged parallel to each other along an X-direction and include a plurality of entry members arranged parallel to each other in the X-direction and configured to enter between neighboring partition members, and a pushing member to push the plurality of entry members in turn and allow them to enter neighboring partition members while moving in the X direction. The entry members are biased in an exiting direction from between the neighboring partition members.

Pitch change device and pitch change method

The gripping device is provided with a rod portion which is movable vertically along a rod axis, to the lower end is mounted a connecting block. A pair of opening and closing lever portions is disposed to face each other along the direction of a fore-to-aft or lateral axis, with intermediate portions which are pivotal about a fulcrum support shaft portion parallel to a left-right or longitudinal axis. A link mechanism connects the connecting block and the upper ends of the pair of the opening and closing lever portions and pivots the pair of the opening and closing lever portions in the direction of the fore-to-aft axis in response to the vertical movement of the rod portion. The pair of the opening and closing lever portions is formed with a cutout or notch at least extending from the intermediate portions to upper ends and is disposed against each other with the rod portion.

Gripping device

The present invention relates to a chuck mechanism of a charge/discharge testing device for flat-rechargeable batteries and has a proposition to provide a chuck mechanism that makes it possible to lighten conventionally needed troublesome works, that is, for example, works of storing and fixing a large number of flat-rechargeable batteries in a container, and that is capable of surely chucking the flat-rechargeable batteries (electrodes). The chuck mechanism includes a first guide engageable with a battery pressing member of a battery storage which moves according to a battery storage width of a plurality of flat-rechargeable batteries stored in parallel in the battery storage, a plurality of chuck units arranged in parallel by being resiliently and continuously joined and having the first guide on one end side, and a second guide mounted on each of the chuck units, wherein a chuck width of all of the chuck units resiliently arranged in parallel is adjusted according to the battery storage width of the flat-rechargeable batteries by an engagement of the first guide and the battery pressing member, and the second guide positions each of the chuck units being adjusted according to the battery storage width with corresponding flat-rechargeable batteries in the battery storage.

Growing community of inventors

Yamato, Japan

Takeshi Yasooka