Honda Giken Kogyo Kabushiki Kaisha

Tatsurou Horie

Hiromitsu Sato

Kenji Fukuda

Osamu Hasegawa

Yasuyuki Sando

Minoru Nakajima

Kazuhiko Yagi

Hirohisa Ogawa

Toshihiro Sone

Akiyoshi Shimada

Yuichi Nakamura

The invention provides a hybrid vehicle drive apparatus in which a stator of a motor used under a high temperature environment can be simply and securely fixed to a motor housing. An AC motor is connected to a crank shaft between an internal combustion engine and a transmission, the AC motor is provided with a motor housing connected to each of the internal combustion engine and transmission, a stator constituted by a plurality of stator pieces arranged to form a ring shape, each of the stator pieces constituted by stator core teeth, a stator hold ring opening portion corresponds to an outer peripheral shape of the stator and is press-fitted to the opening portion, and the stator hold ring is fixed to the motor housing. A coefficient of thermal expansion of the stator substantially coincides with a coefficient of thermal expansion of the stator hold ring.

Hybrid vehicle drive apparatus

A battery discharge gas control system, which releases a hydrogen gas generated from the battery assembly when the battery assembly is charged and discharged, is capable of keeping the battery structure highly resistant to water or humidity. The battery discharge gas control system has a battery having a gas release port, a passage connected to the gas release port, a control valve connected to the passage, a pressure sensor for detecting a pressure in the passage, and a control circuit for opening the control valve to release a gas generated by the battery from the passage, depending on the pressure in the passage as detected by the pressure sensor. During a period of time in which no hydrogen gas is generated or a generated hydrogen gas is not plenty enough to be released while the battery is being charged or discharged, the passage is closed for thereby keeping the battery structure highly resistant to water or humidity. The control valve has a solenoid-operated valve openable in response to a control signal outputted by the control circuit, and a relief valve mechanically openable depending on the pressure in the passage. Even in the event of a failure of the solenoid-operated valve, the relief valve is mechanically opened depending on the pressure in the passage, thereby protecting the passage from damage.

Battery discharge gas control system

Growing community of inventors

Saitama, Japan

Tatsurou Horie