Toyota Jidosha Kabushiki Kaisha

Sumitomo Electric Industries, Limited

Aisin Seiki Kabushiki Kaisha

Naoto Koshino

Keiji Takizawa

Takeshi Ariyoshi

Hironobu Saka

Shinichi Iizuka

Takashi Hirakushi

Tomohiko Miyamoto

Shingo Nagai

Tetsuo Wakita

Hiroshi Hoshina

Ko Hashimoto

A motor controller for controlling a motor that is driven with electric power from a battery includes an atmospheric pressure sensor, and a coil temperature sensor. The motor controller is configured to determine an upper limit state of charge of the battery, and lower the upper limit state of charge of the battery in response to the atmospheric pressure being a predetermined pressure or lower or in response to the coil temperature being a predetermined temperature or higher.

Motor controller

Segment coils arranged as aligned in slot portions of an annular core each include a straight portion and a pair of coil end portions, and have a tip end of the coil end portion of the pair of coil end portions as a tip end portion for joint including a joint surface for joint to another segment coil. The tip end portion for joint has the joint surface in parallel to a radial direction of the annular core when viewed in an axial direction of the annular core.

Segment coil, stator including segment coil, and method of manufacturing segment coil

Each of segment coils arranged as aligned in a slot of a stator core includes a coil central portion accommodated in the slot and two coil end portions protruding outward. The coil end portion of the two coil end portions includes a pair of coil pieces formed by inclining a coil at different angles toward the coil central portion with a vertex lying therebetween. Any one of the pair of coil pieces includes in a region in the vicinity of the vertex, a recessed step portion formed from two sides in non-parallel to and at an angle with respect to an end surface of the stator core.

Segment coil, method of manufacturing segment coil, and stator including segment coil

Disclosed is a reserve tank comprising a tank main body that has a plurality of chambers partitioned by partition walls, an inflow port that allows coolant to flow into the tank main body, and an outflow port that allows the coolant to flow out of the tank main body, the plurality of chambers including a first chamber and a second chamber partitioned by the partition walls, and a third chamber that accumulates the coolant that should flow from the inflow port into the first chamber, the first chamber having a first communicating portion formed to allow the coolant to flow into the second chamber, the third chamber having a second communicating portion formed to allow the accumulated coolant to flow into the first chamber, the flow rate of the coolant passing through the second communicating portion being set smaller than the flow rate of the coolant passing through the first communicating portion.

Reserve tank

An electric motor has a rotor, stator, and covers. A stator coil is a pre-wound coil inserted into slots of a stator core from its inner side. A no-lead-wire side coil end portion of the stator coil protrudes radially inward. A no-lead-wire side coolant chamber is liquid-tightly defined by the cover covering the no-lead-wire side coil end portion and a seal plate(s) that is attached from or on a radially inner side of the stator core so as to cover an opening between the inner peripheral edge of the cover and the inner peripheral edge of the stator core.

Growing community of inventors

Okazaki, Japan

Naoto Koshino