Gifu, Japan
Gifu, Japan

SANYO Electric Co., Ltd. is a Japanese major electronics company and member of the Fortune Global 500 whose headquarters is located in Moriguchi, Osaka prefecture, Japan. Sanyo targets the middle of the market and has over 230 subsidiaries and affiliates.On December 21, 2009 Panasonic completed a 400 billion yen acquisition of a 50.2% stake in Sanyo, making Sanyo a subsidiary of Panasonic. In July 2010, Panasonic announced that they would acquire the remaining shares of Sanyo. Wikipedia.

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There is provided a positive electrode active material for a nonaqueous electrolyte secondary battery capable of suppressing a decrease in the capacity retention ratio after high-temperature cycles. There is provided a positive electrode active material for a nonaqueous electrolyte secondary battery that includes a secondary particle formed by aggregation of primary particles formed of a lithium transition metal oxide. A rare-earth compound secondary particle formed by aggregation of particles formed of a rare-earth compound adheres to a recess formed between primary particles adjacent to each other on a surface of the secondary particle, and the rare-earth compound secondary particle adheres to both the primary particles adjacent to each other in the recess. The lithium transition metal oxide contains tungsten dissolved therein.


There is provided a positive electrode active material for a nonaqueous electrolyte secondary battery capable of suppressing an increase in DCR during cycles. There is provided a positive electrode active material for a nonaqueous electrolyte secondary battery that includes a secondary particle formed by aggregation of primary particles formed of a lithium transition metal oxide. A rare-earth compound secondary particle formed by aggregation of particles formed of a rare-earth compound adheres to a recess formed between primary particles adjacent to each other on a surface of the secondary particle, and the rare-earth compound secondary particle adheres to both the primary particles adjacent to each other in the recess. A tungsten-containing compound adheres to an interface of primary particles inside the secondary particle formed of the lithium transition metal oxide.


There is provided a positive electrode for nonaqueous electrolyte secondary batteries in which a decrease in the initial charge capacity can be suppressed even when a positive electrode exposed to the air is used. A positive electrode for a nonaqueous electrolyte secondary battery according to an aspect of the present invention contains a lithium transition metal composite oxide represented by general formula Li_(1+x)Mn_(a)M_(b)O_(2+c )(in the formula, x, a, b, and c satisfy x+a+b=1, 0


Patent
SANYO Electric Co. | Date: 2017-05-17

This battery pack is assembled by welding an opening portion (20) of a waterproof bag (2) to provide an insertion opening (23) that is smaller than the total opening width (W) but allows a battery core pack (1) to be inserted, inserting the battery core pack (1) into the waterproof bag (2), then, closing the opening portion (20) of the waterproof bag (2), and placing the waterproof bag (2), in which the battery core pack (1) has been placed, into an external case (3). In this way, this battery pack can be assembled efficiently, with the battery core pack having been given a waterproof structure by the waterproof bag (2) while in an ideal state.


A prismatic secondary battery includes a prismatic hollow outer body having a mouth and a bottom; a flat electrode assembly, a positive electrode collector, a negative electrode collector, and an electrolyte, all of which are stored in the prismatic outer body; a sealing plate sealing up the mouth of the prismatic outer body; and a positive electrode terminal attached to the sealing plate in an electrically insulated manner. The sealing plate includes a gas release valve and an electrolyte pour hole and further includes, on the front face, a concaved flat face having an identification code. With the prismatic secondary battery of the invention, a jig for assembly or the like is unlikely to come into contact with the identification code during an assembly process of the prismatic secondary battery, hence the identification code is unlikely to be abraded, and the traceability is unlikely to be lost.


Patent
SANYO Electric Co. | Date: 2017-09-06

A battery pack includes: a plurality of battery cells (1); and heat dissipating holder (2) that is disposed among battery cells (1) and is in contact with the battery cells (1) in a thermally coupled state. Heat dissipating holder (2) includes: holder body (3) having insertion holes into which battery cells (1) are inserted; and thermally-conductive insulating rubber (4) having elastic cylinders to be disposed on the inner surfaces of the insertion holes. Each elastic cylinder includes a plurality of elastic projections projecting on its inner surface. The inner shape of each elastic cylinder in a non-insertion state of battery cell (1) is made smaller than the outer shape of battery cell (1). In heat dissipating holder (2), battery cells (1) inserted into the elastic cylinders are disposed at fixed positions in the insulated state. The elastic projections are elastically pressed on and closely contact the periphery of battery cell (1). The thermal energy of battery cells (1) is conducted to holder body (3) via the elastic cylinders.


In a nonaqueous electrolyte secondary battery including a positive electrode, a negative electrode and a nonaqueous electrolytic solution, the nonaqueous electrolytic solution contains a nitrile compound having a chain saturated hydrocarbon group and a nitrile group, the number of carbon atoms in the nitrile compound is four or more, and the positive electrode contains a positive-electrode active material on the surface of which particles of a rare earth element compound are deposited in dispersed form.


Patent
SANYO Electric Co. | Date: 2017-08-23

Battery pack (100) includes: a plurality of chargeable/dischargeable cylindrical cells (1) battery holder (2) in which the plurality of cylindrical cells (1) are disposed; and thermally conductive resin (7) that closely adheres to cylindrical cells (1), which are stored in battery holder (2), in a thermally coupled state above battery holder (2). Battery holder (2) includes: bottom plate (21) including a plurality of holding grooves (23) in which cylindrical cells (1) are disposed; and partition walls (24) that are disposed between holding grooves (23) and between adjacent cylindrical cells (1). Partition walls (24) are lower than the diameter of cylindrical cells (1) disposed in holding grooves (23), thermally conductive resin (7) is disposed between adjacent cylindrical cells (1) above partition walls (24), and thermally conductive resin (7) interconnects adjacent cylindrical cells (1).


Patent
SANYO Electric Co. | Date: 2017-01-05

Battery pack includes battery module, metallic installation substrate, metallic attachment member disposed between battery module and installation substrate, metallic fastening part, and insulating member for electrically insulating fastening part and attachment member, and attachment member and installation substrate, from each other, respectively. Insulating member includes annular insulating part having an inner-diameter hole allowing passing through of a male screw shaft portion of fastening part, and electrically insulating between attachment member and an entire surface of an outer periphery of the male screw shaft portion of the fastening part, and between attachment member and an entire surface of an outer periphery of the larger-diameter portion of fastening part; and plate-like insulating part having a corresponding inner-diameter hole which corresponds to the inner-diameter hole of annular insulating part and allows passing through of the male screw shaft portion of fastening part, and electrically insulating between attachment member and installation substrate.


Patent
SANYO Electric Co. | Date: 2017-09-13

A power supply device includes outer case (2), a battery block housed in this outer case (2) and including at least one or more secondary batteries; a circuit board connected to the battery block; and power supply connector (3) connected to output lead (5) that outputs an output current from the battery block. Power supply connector (3) is attached in a floating state to fixed surface (2X) of outer case (2). Furthermore, the circuit board is disposed in parallel to a first direction orthogonal to fixed surface (2X) between fixed surface (2X) and the battery block. Output lead (5) is disposed in wiring space provided in a lower side or an upper side of the circuit board, and connected to the battery block.

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