Yazaki Corporation

Kyowa Hakko Kogyo Co., Ltd.

Yuichi Takahashi

Yutaka Kanda

Yutaka Saitoh

Chikara Murakata

Hiromitsu Saito

Jian Wang

Tadashi Ashizawa

Yukinari Naganishi

Takahiro Syouda

Katsushige Gomi

Tsutomu Saigo

Satoru Horiuchi

Nobuyuki Takahashi

Hironao Fujii

Shingo Kakita

Ayako Saito

Kazuyo Sugiyama

A vehicle charging system includes: a power supply device including a power supply fitting body and provided in a stop space of a vehicle; and a power receiving fitting body that is provided on a bottom of the vehicle and is able to be fitted to and removed from the power supply fitting body in an insertion/removal direction. The power receiving fitting body includes power receiving terminals electrically connected no a battery provided in the vehicle, a power receiving terminal holding part that holds the power receiving terminals, and an opposite space forming part that is arranged adjacent to the power receiving terminal holding part in the insertion/removal direction and forms an opposite space facing the power receiving terminals.

Vehicle charging system and power receiving fitting body

One-side plates of first and second condensers are connected to a one-side electrode of one of a plurality of secondary cells. First switches connect the other-side electrode of the secondary cell to the other-side plate of one of the first condenser and the second condenser. An MCU controls the first switches to connect the other-side electrode of the secondary cell to the other-side plate of the first condenser when the plurality of secondary cells is in a first state, and then connect the other-side electrode of the secondary cell to the other-side plate of the second condenser when the plurality of secondary cells is in a second state. A differential amplifier circuit outputs a differential voltage of voltages of the other-side plates of the first condenser and the second condenser. A cell monitoring IC detects states of the secondary cells based on the differential voltage.

Secondary cell state detector

A condenser is connected to both electrodes of a secondary cell. A first switch is provided between a positive electrode of the secondary cell and a one-side plate of the condenser. An MCU turns ON the first switch when the secondary cell is in a first state to connect both electrodes of the secondary cell to both plates of the condenser, and then turns OFF the first switch. In addition, thereafter, the MCU detects a state of the secondary cell based on a differential voltage output from a differential amplifier circuit when the secondary cell is in a second state.

DC 107 derivatives and treatment methods

Growing community of inventors

Shizuoka, Japan

Yuichi Takahashi