公开(公告)号：US20150280551A1

公开(公告)日：2015-10-01

申请号：US14664413

申请日：2015-03-20

Applicant: Seiko Instruments Inc.

Inventor： Atsushi SAKURAI ,  Hiroshi SAITO

IPC: H02M3/06

CPC classification number: H02M3/06 ,  H02M3/02 ,  H02M3/07 ,  H02M3/08

Abstract: To provide a booster apparatus capable of being configured without using a plurality of voltage generators and with a simple circuit. A booster apparatus is equipped with a voltage generator, a plurality of boosting capacitors connected in series with the voltage generator, intermediary capacitors, and switch circuits configured to perform switching control of connections between the voltage generator, the plurality of boosting capacitors and the intermediary capacitors.

Abstract translation: 提供能够在不使用多个电压发生器的情况下配置并且具有简单的电路的增压装置。 升压装置配备有电压发生器，与电压发生器串联连接的多个升压电容器，中间电容器和开关电路，其被配置为执行电压发生器，多个升压电容器和中间电容器之间的连接的切换控制 。

公开(公告)号：US20150084599A1

公开(公告)日：2015-03-26

申请号：US14489204

申请日：2014-09-17

Applicant: Seiko Instruments Inc.

Inventor： Satoshi ABE ,  Atsushi SAKURAI

IPC: H02J7/00

CPC classification number: H02J7/0063 ,  H02J7/0031 ,  H02J7/007 ,  H02J2007/0037 ,  H02J2007/004 ,  H03K2217/0054

Abstract: A charging and discharging control circuit includes a switching circuit that controls the gate of a bidirectional conduction type field effect transistor; a first transistor of which the drain is connected to the drain of the bidirectional conduction type field effect transistor, the gate is connected to the source of the bidirectional conduction type field effect transistor, and the source and the back gate are connected to a first terminal of the switching circuit; and a second transistor of which the drain is connected to the source of the bidirectional conduction type field effect transistor, the gate is connected to the drain of the bidirectional conduction type field effect transistor, and the source and the back gate are connected to the first terminal of the switching circuit. The back gate of the bidirectional conduction type field effect transistor is connected to the first terminal of the switching circuit.

Abstract translation: 充放电控制电路包括控制双向导通型场效应晶体管的栅极的开关电路; 第一晶体管，其漏极连接到双向导电型场效应晶体管的漏极，栅极连接到双向导电型场效应晶体管的源极，源极和后栅极连接到第一端子 的开关电路; 以及第二晶体管，其漏极连接到双向导电型场效应晶体管的源极，栅极连接到双向导电型场效应晶体管的漏极，源极和后栅极连接到第一 端子的开关电路。 双向导通型场效应晶体管的背栅极连接到开关电路的第一端。

公开(公告)号：US20150380774A1

公开(公告)日：2015-12-31

申请号：US14753722

申请日：2015-06-29

Applicant: Seiko Instruments Inc.

Inventor： Toshiyuki KOIKE ,  Kazuaki SANO ,  Atsushi SAKURAI ,  Hiroshi MUKAINAKANO

IPC: H01M10/42 ,  H01M10/48 ,  G01R31/36

CPC classification number: H01M10/48 ,  G01R31/3606 ,  G01R31/3662 ,  H01M10/44

Abstract: Provided is a battery state monitoring circuit and a battery device capable of predicting a state of charge of a secondary battery with high accuracy. The battery state monitoring circuit includes a pseudo-equivalent circuit of the secondary battery, and causes a current flowing through a sense resistor to flow to the pseudo-equivalent circuit of the secondary battery, to thereby measure a pseudo-open circuit voltage of the secondary battery.

Abstract translation: 提供了能够高精度地预测二次电池的充电状态的电池状态监视电路和电池装置。 电池状态监视电路包括二次电池的伪等效电路，并且使流过检测电阻器的电流流到二次电池的伪等效电路，从而测量二次电池的伪开路电压 电池。

公开(公告)号：US20140232345A1

公开(公告)日：2014-08-21

申请号：US14182972

申请日：2014-02-18

Applicant: Seiko Instruments Inc.

Inventor： Atsushi SAKURAI ,  Hiroshi SAITO

IPC: H03K17/082 ,  H02J7/00

CPC classification number: H03K17/0822 ,  H02J7/0034 ,  H02J7/0068

Abstract: There is provided a semiconductor device capable of preventing the passage of current that is unexpected in a circuit operation even in the case of reverse connection, thus ensuring higher safety. The semiconductor device has a switch circuit which includes: a first transistor; a second transistor having a drain thereof connected to a drain of the first transistor, a source and a back gate thereof connected to a back gate of the first transistor, and a gate thereof connected to a source of the first transistor; and a third transistor having a drain thereof connected to the source of the first transistor, a source and a back gate thereof connected to the back gate of the first transistor, and a gate thereof connected to the drain of the first transistor.

Abstract translation: 提供了即使在反向连接的情况下也能够防止电路操作中意外的电流通过的半导体器件，从而确保更高的安全性。 该半导体器件具有开关电路，该开关电路包括：第一晶体管; 第二晶体管，其漏极连接到第一晶体管的漏极，源极和后栅极连接到第一晶体管的背栅极，其栅极连接到第一晶体管的源极; 以及第三晶体管，其漏极连接到第一晶体管的源极，源极和后栅极连接到第一晶体管的背栅极，其栅极连接到第一晶体管的漏极。

公开(公告)号：US20140167702A1

公开(公告)日：2014-06-19

申请号：US14106122

申请日：2013-12-13

Applicant: Seiko Instruments Inc.

Inventor： Atsushi SAKURAI ,  Kazuaki SANO ,  Toshiyuki KOIKE ,  Shinya FUKUCHI

IPC: H02J7/00

CPC classification number: H02J7/0029 ,  H02J2007/0039

Abstract: There are provided an overcurrent protection circuit which has a smaller circuit area, a charging and discharging control circuit, and a compact battery device. The charging and discharging control circuit includes an overcurrent detection circuit which monitors the voltage of an overcurrent detection resistor connected to an overcurrent detection terminal and which detects the flow of an overcurrent into a secondary battery, an overcurrent release circuit which monitors the voltage at a terminal to which a load is connected through a voltage step-down circuit connected to an overcurrent release terminal and which detects the removal of a load, and a clamping circuit connected to the overcurrent release terminal are provided. The voltage at the overcurrent release terminal is clamped by the voltage step-down circuit and the clamping circuit.

Abstract translation: 提供了具有较小电路面积的过电流保护电路，充放电控制电路和小型电池装置。 充放电控制电路包括过电流检测电路，其监测与过电流检测端子连接的过电流检测电阻器的电压，并检测过电流流入二次电池;过电流释放电路，其监视端子处的电压 通过连接到过电流释放端子的电压降压电路连接负载并检测负载的移除，并且提供连接到过电流释放端子的钳位电路。 过电流释放端子上的电压由降压电路和钳位电路钳位。