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公开(公告)号：US09812743B2
公开(公告)日：2017-11-07
申请号：US14753722
申请日：2015-06-29
Applicant: Seiko Instruments Inc.
Inventor： Toshiyuki Koike , Kazuaki Sano , Atsushi Sakurai , Hiroshi Mukainakano
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.
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公开(公告)号：US09525296B2
公开(公告)日：2016-12-20
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。
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公开(公告)号：US09673656B2
公开(公告)日：2017-06-06
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.
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Patent Agency Ranking
公开(公告)号：US09214821B2
公开(公告)日：2015-12-15
申请号：US14173496
申请日：2014-02-05
Applicant: Seiko Instruments Inc.
Inventor： Toshiyuki Koike
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。
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5.发明授权公开(公告)号：US09748789B2
公开(公告)日：2017-08-29
申请号：US14202602
申请日：2014-03-10
Applicant: Seiko Instruments Inc.
Inventor： Fumihiko Maetani , Toshiyuki Koike
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.
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公开(公告)号：US09401607B2
公开(公告)日：2016-07-26
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。
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公开(公告)号：US09647465B2
公开(公告)日：2017-05-09
申请号：US14711343
申请日：2015-05-13
Applicant: Seiko Instruments Inc.
Inventor： Takashi Ono , Toshiyuki Koike , Satoshi Abe , Fumihiko Maetani
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.
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公开(公告)号：US09203119B2
公开(公告)日：2015-12-01
申请号：US14195252
申请日：2014-03-03
Applicant: Seiko Instruments Inc.
Inventor： Takashi Ono , Toshiyuki Koike , Satoshi Abe
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。
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