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。

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：US20140253044A1

公开(公告)日：2014-09-11

申请号：US14202602

申请日：2014-03-10

Applicant: Seiko Instruments Inc.

Inventor： Fumihiko MAETANI ,  Toshiyuki KOIKE

IPC: H02J7/00

CPC classification number: H02J7/0078 ,  H02H7/18 ,  H02J7/0031 ,  H02J2007/0039

Abstract: There is provided a battery device in which the accuracy of an over-current detection current value is high to have high safety. In a charging/discharging control circuit, a reference voltage circuit of an over-current detection circuit is configured to include a constant current circuit, a resistor, and a transistor having a resistance value that varies with a voltage of a secondary cell, that are connected to both ends of the secondary cell, and outputs, as a reference voltage, a voltage that is generated due to the flowing of a current of the constant current circuit to the resistor and the transistor.

Abstract translation: 提供了一种电池装置，其中过电流检测电流值的精度高，以具有高安全性。 在充放电控制电路中，过电流检测电路的基准电压电路被配置为包括恒定电流电路，电阻器和具有随二次电池的电压而变化的电阻值的晶体管， 连接到二次电池的两端，并且输出由于恒定电流电路的电流流向电阻器和晶体管而产生的电压作为参考电压。

公开(公告)号：US20150162775A1

公开(公告)日：2015-06-11

申请号：US14564739

申请日：2014-12-09

Applicant: Seiko Instruments Inc.

Inventor： Takashi ONO ,  Fumihiko MAETANI ,  Toshiyuki KOIKE

IPC: H02J7/00

CPC classification number: H02J7/0063 ,  H02J7/0031 ,  H02J2007/0039

Abstract: Provided is a battery device with high convenience, which is capable of setting overcurrent release impedance to be low. The battery device includes: a first comparator circuit for detecting an overcurrent based on a first reference voltage; and a second comparator circuit for outputting an overcurrent release voltage control signal based on a second reference voltage that is higher than the first reference voltage.

Abstract translation: 提供了一种高度方便的电池装置，其能够将过电流释放阻抗设定为低。 电池装置包括：第一比较器电路，用于基于第一参考电压检测过电流; 以及第二比较器电路，用于基于高于第一参考电压的第二参考电压输出过电流释放电压控制信号。

公开(公告)号：US20140248514A1

公开(公告)日：2014-09-04

申请号：US14195252

申请日：2014-03-03

Applicant: Seiko Instruments Inc.

Inventor： Takashi ONO ,  Toshiyuki KOIKE ,  Satoshi ABE

IPC: H01M10/42

CPC classification number: H01M10/4257 ,  H02J7/0029 ,  H02J2007/0039

Abstract: Provided is a battery device with high safety, which has improved accuracy of overcurrent detection. In the battery device, an overcurrent detection terminal of a battery state monitoring circuit is connected to a node between a discharge control switch and a charge control switch via a resistor.

Abstract translation: 提供了一种具有高安全性的电池装置，具有提高的过电流检测精度。 在电池装置中，电池状态监视电路的过电流检测端子通过电阻连接到放电控制开关和充电控制开关之间的节点。

公开(公告)号：US20140239884A1

公开(公告)日：2014-08-28

申请号：US14190908

申请日：2014-02-26

Applicant: Seiko Instruments Inc.

Inventor： Toshiyuki KOIKE

IPC: H02J7/00

CPC classification number: H02J7/0034

Abstract: Provided is a charge and discharge control circuit and a battery device which ensure high safety, even when a charger is reversely connected. The charge and discharge control circuit includes a consumption current increase circuit for supplying a current from a power supply terminal to a ground terminal, the consumption current increase circuit including a switch circuit configured to be turned on in response to a detection signal from a charger reverse connection detection circuit, which indicates that a charger is reversely connected.

Abstract translation: 提供了一种充电和放电控制电路以及确保高安全性的电池装置，即使在充电器反向连接的情况下也是如此。 充放电控制电路包括用于将电流从电源端子提供给接地端子的消耗电流增加电路，所述消耗电流增加电路包括响应于来自充电器反相器的检测信号而被接通的开关电路 连接检测电路，表示充电器反向连接。

公开(公告)号：US20140217988A1

公开(公告)日：2014-08-07

申请号：US14173496

申请日：2014-02-05

Applicant: Seiko Instruments Inc.

Inventor： Toshiyuki KOIKE

IPC: H02J7/00

CPC classification number: H02J7/0031 ,  G01R31/362 ,  H02J7/0021 ,  H02J2007/0037 ,  H02J2007/0039 ,  H02J2007/004

Abstract: The level shifter circuit includes: a first transistor including a gate connected to an input terminal of the level shifter circuit and a source connected to a first power supply terminal; a first resistor including one terminal connected to the input terminal of the level shifter circuit; a second transistor including a gate connected to another terminal of the first resistor, a drain connected to a drain of the first transistor, and a source connected to a terminal for inputting the voltage subjected to the level conversion; and a third transistor including a gate and a drain connected to the another terminal of the first resistor, and a source connected to the terminal for inputting the voltage subjected to the level conversion. Further, the battery device includes the charge/discharge control circuit.

Abstract translation: 电平移位器电路包括：第一晶体管，包括连接到电平移位器电路的输入端的栅极和连接到第一电源端子的源极; 第一电阻器，包括连接到电平移位器电路的输入端子的一个端子; 第二晶体管，包括连接到第一电阻器的另一端子的栅极，连接到第一晶体管的漏极的漏极和连接到用于输入经过电平转换的电压的端子的源极; 以及第三晶体管，其包括连接到所述第一电阻器的另一端子的栅极和漏极，以及连接到所述端子的源，用于输入经过所述电平转换的电压。 此外，电池装置包括充放电控制电路。

公开(公告)号：US20150333555A1

公开(公告)日：2015-11-19

申请号：US14711307

申请日：2015-05-13

Applicant: Seiko Instruments Inc.

Inventor： Takashi ONO ,  Toshiyuki KOIKE ,  Satoshi ABE ,  Fumihiko MAETANI

IPC: H02J7/00

CPC classification number: H02J7/0072 ,  H02J7/0029 ,  H02J2007/0039

Abstract: Provided is a highly safe battery device in which the accuracy of an overcurrent detection current value and a short-circuit current value is improved and current consumption is reduced. A short-circuit and overcurrent detecting circuit includes: a reference voltage circuit configured to output a reference voltage generated when a constant current flows through an impedance element and a transistor having a resistance value that is changed depending on a voltage of a secondary battery; a first comparator circuit configured to compare a voltage of an overcurrent detecting terminal with the reference voltage; and a second comparator circuit configured to compare a voltage based on the voltage of the overcurrent detecting terminal with the reference voltage.

Abstract translation: 提供了一种高度安全的电池装置，其中过电流检测电流值和短路电流值的精度提高，电流消耗降低。 短路和过电流检测电路包括：参考电压电路，被配置为输出当恒定电流流过阻抗元件时产生的参考电压和具有根据二次电池的电压而改变的电阻值的晶体管; 第一比较器电路，被配置为将过电流检测端子的电压与参考电压进行比较; 以及第二比较器电路，被配置为将基于过电流检测端子的电压的电压与参考电压进行比较。

公开(公告)号：US20150333546A1

公开(公告)日：2015-11-19

申请号：US14711343

申请日：2015-05-13

Applicant: Seiko Instruments Inc.

Inventor： Takashi ONO ,  Toshiyuki KOIKE ,  Satoshi ABE ,  Fumihiko MAETANI

IPC: H02J7/00 ,  G01R31/02 ,  G01R31/36

CPC classification number: H02J7/00 ,  G01R31/025 ,  G01R31/3606 ,  H02J7/0029 ,  H02J7/0063 ,  H02J7/0072 ,  H02J7/0077 ,  H02J2007/0039 ,  H02J2007/0067

Abstract: A short-circuit and overcurrent detecting circuit includes a reference voltage circuit including a constant current circuit, a first impedance element, a first transistor having a resistance value depending a voltage of a secondary battery, a second impedance element, and a second transistor having a resistance value depending the voltage of the secondary battery, which are connected in series. The reference voltage circuit outputs a first reference voltage from a node of the constant current circuit and the first impedance element, and outputs a second reference voltage from a node of the first transistor and the second impedance element. The short-circuit and overcurrent detecting circuit further includes: a first comparator circuit for comparing a voltage of an overcurrent detecting terminal with the first reference voltage; and a second comparator circuit for comparing the voltage of the overcurrent detecting terminal with the second reference voltage.

Abstract translation: 短路和过电流检测电路包括参考电压电路，其包括恒流电路，第一阻抗元件，具有取决于二次电池的电压的电阻值的第一晶体管，第二阻抗元件和具有 电阻值取决于二次电池的串联电压。 参考电压电路从恒流电路的节点和第一阻抗元件输出第一参考电压，并从第一晶体管和第二阻抗元件的节点输出第二参考电压。 短路和过电流检测电路还包括：第一比较器电路，用于将过电流检测端子的电压与第一参考电压进行比较; 以及用于将过电流检测端子的电压与第二参考电压进行比较的第二比较器电路。