Matsushita Electric Industrial Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Panasonic Corporation

Akira Kuroda

Kohei Suzuki

Masao Fukunaga

Tsumoru Ohata

Kazunori Kubota

Motoi Kawamura

Sachio Takeda

Masanori Sumihara

Katsumi Kashiwagi

Ryuta Morishima

Yasuhiko Sakai

Yasuhiro Inadomi

Each of battery cells () that constitute a battery module includes a flat-shaped rolled electrode body () formed by rolling a sheet-like anode collector () and a sheet-like cathode collector () along with a sheet-like separator, and a trailing edge (E) of the sheet-like anode collector () and a trailing edge (E) of the sheet-like cathode collector () are located at a position (B) outside a portion of the rolled electrode body () which substantially receives a restraining load. The battery module, in which the restraining load is applied to the cells, achieves long service life while maintaining good output characteristics.

Restrained battery module made up of cells having rolled electrode bodies, and method of making the same

In an assembled battery (), a plurality of rechargeable unit cells (), each of which is provided with an electrode body () that has a positive electrode () and a negative electrode (), a container () that houses the electrode body () and an electrolyte, and a positive electrode terminal () and a negative electrode terminal () which are arranged on an outside of the container (), the rechargeable unit cells being connected in series. The plurality of unit cells () are arranged in a predetermined direction and fastened together while a predetermined load is applied in the arranging direction. Insulating filler () is inserted into a gap between the electrode body () and an inside wall surface of the container () of at least one of the unit cells (), and a thickness in the arranging direction of each of the unit cells () in the fastened state is constant.

Assembled battery, manufacturing method of the same, and vehicle provided with assembled battery

A method for manufacturing a positive electrode plate for a non-aqueous secondary battery including: preparing an active material A, a conductive material B, a binder C, a thickener D, and a liquid component E, the thickener D being in a powder state, the conductive material B including a carbon material, the thickener D including a water-soluble polymer, and the liquid component E including water; preparing a slurry including the component E and an electrode material mixture, the material mixture including the active material A, the conductive material B, the binder C, and the thickener D; and applying the slurry on a current collector. In preparing the slurry, the thickener D in a powder state, the active material A and the conductive material B are kneaded together with the liquid component E, and then the primary kneaded matter, the binder C, and an additional liquid component are kneaded.

Electrode plate of positive electrode for non-aqueous electrolyte secondary battery and manufacturing method thereof

A non-aqueous electrolyte battery is provided, which exhibits good high-rate discharge characteristics and low-temperature characteristics and ensures high safety when the negative electrode contains 0.6 to 1.7 parts by weight of a particulate modified styrene-butadiene rubber as a binder and 0.7 to 1.2 parts by weight of a thickening agent so that the total amount of the binder and thickening agent is 1.3 to 2.4 parts by weight per 100 parts by weight of a carbon material as an active material, and the concentration of LiPFin the non-aqueous electrolyte is 0.6 to 1.05 mole/liter. The surface area of the active material effectively contributable to charging and discharging reaction is sufficient when the surface area of the carbon material per 1 g of the binder contained in the negative electrode is 300 to 600 m.

Non-aqueous electrolyte secondary battery and negative electrode for the same

A non-aqueous electrolyte secondary battery comprises: a positive electrode sheet comprising a positive electrode mixture containing a lithium-containing transition metal oxide as an active material and a particulate binder; a negative electrode sheet comprising a negative electrode mixture containing a carbon material; a separator interposed between the positive electrode sheet and the negative electrode sheet; and a non-aqueous electrolyte containing a lithium salt, wherein the positive electrode sheet and the negative electrode sheet are wound with the separator interposed therebetween to form an electrode assembly, and the positive electrode mixture has an active material density of 3.0 to 4.0 g/ml. The battery has a long life, high energy density and high output.

Non-aqueous electrolyte secondary battery and positive electrode for the same

A non-aqueous electrolyte battery is provided, which exhibits good high-rate discharge characteristics and low-temperature characteristics and ensures high safety when the negative electrode contains 0.6 to 1.7 parts by weight of a particulate modified styrene-butadiene rubber as a binder and 0.7 to 1.2 parts by weight of a thickening agent so that the total amount of the binder and thickening agent is 1.3 to 2.4 parts by weight per 100 parts by weight of a carbon material as an active material, and the concentration of LiPF in the non-aqueous electrolyte is 0.6 to 1.05 mole/liter. The surface area of the active material effectively contributable to charging and discharging reaction is sufficient when the surface area of the carbon material per 1 g of the binder contained in the negative electrode is 300 to 600 m .

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Toyota, Japan

Akira Kuroda