公开(公告)号：US10591551B2

公开(公告)日：2020-03-17

申请号：US15699528

申请日：2017-09-08

Applicant: DENSO CORPORATION

Inventor： Hayato Mizoguchi

IPC: G01R31/3835 ,  G01R31/396 ,  H01M10/48 ,  G01R19/165 ,  H01M2/34 ,  H02H3/20 ,  H02H7/18

Abstract: A voltage detection apparatus is provided which is suitable for an assembled battery including a series connection of battery cells. The apparatus includes a monitoring section having battery input sections, a high-potential connection section, a low-potential connection section, and a main voltage detection section; a high-potential electrical path; a low-potential electrical path; a control section that includes a high-potential input section electrically connected to the high-potential connection section, a low-potential input section electrically connected to the low-potential connection section, and a sub voltage detection section that detects a voltage difference between the high-potential input section and the low-potential input section as a terminal voltage of a detection block; a high-potential switch that is provided in the high-potential electrical path to open and close the high-potential electrical path; and a low-potential switch that is provided in the low-potential electrical path to open and close the low-potential electrical path.

公开(公告)号：US10120009B2

公开(公告)日：2018-11-06

申请号：US14982635

申请日：2015-12-29

Applicant: DENSO CORPORATION

Inventor： Tomomichi Mizoguchi ,  Hayato Mizoguchi

IPC: G01R31/00 ,  G01R31/02 ,  G01R31/42

Abstract: A ground-fault determination apparatus, which is for use in a vehicle power supply system including a DC power source and a DC supply circuit, includes an acquisition unit that applies an AC signal to the DC supply circuit through a series connection of a resistor and a capacitor to acquire a peak value of the AC signal divided by a resistance of the resistor and an insulation resistance of the DC supply circuit, a ground-fault determination unit that determines presence of a ground-fault based on a comparison between a determination threshold and the peak value, an estimation unit that estimates at least one of a maximum output voltage of the DC supply circuit and a common capacitance between the DC supply circuit and a vehicle body, and a setting unit that sets the determination threshold based on at least one of the maximum output voltage and the common capacitance.

公开(公告)号：US10816608B2

公开(公告)日：2020-10-27

申请号：US16049297

申请日：2018-07-30

Applicant: DENSO CORPORATION

Inventor： Masahiko Ito ,  Hayato Mizoguchi

IPC: G01R31/396 ,  H05K1/18 ,  H05K1/02 ,  H01M10/48 ,  H01M10/42 ,  H01M2/34 ,  H01M2/20 ,  G01R19/165

Abstract: A monitoring device includes a monitoring section and a wiring section for electrically connecting the monitoring section and a battery cell. A first and a second electrode terminal groups are reversely arranged. The wiring section includes a first wiring section for electrically connecting the first electrode terminal group and the monitoring section, and a second wiring section for electrically connecting the second electrode terminal group and the monitoring section. The first wiring section has a first substrate and a first wiring pattern, and the second wiring section has a second substrate and a second wiring pattern. The second substrate has a lateral connecting space where a first end side of the second wiring pattern is disposed and a longitudinal connecting space where a second end side of the second wiring pattern is disposed, and the second substrate is bent such that the spaces are opposed to each other.

公开(公告)号：US10180459B2

公开(公告)日：2019-01-15

申请号：US15210077

申请日：2016-07-14

Applicant: DENSO CORPORATION

Inventor： Hayato Mizoguchi ,  Takashi Inamoto

IPC: G01R31/327 ,  H02H3/04 ,  H02H3/17 ,  G01R31/44

Abstract: A monitoring system is applied to an electrical system, which includes a DC power source and an electrical apparatus that is connected to the DC power source by a pair of electric power leads incorporating respective switches. To detect leakage current from the DC power source, a low-frequency AC signal is applied via a large-capacitance capacitor to a specific connection position, between a first terminal of the DC power source and the corresponding switch, and the resultant voltage of that signal is measured. To detect a short-circuit failure of one or both of the switches, a high-frequency AC signal is applied via a low-capacitance capacitor to the specific connection position, and the resultant signal voltage is measured. Judgement as to occurrence of leakage current and/or short-circuit failure is based on the measured signal voltage values.

公开(公告)号：US09041406B2

公开(公告)日：2015-05-26

申请号：US13933852

申请日：2013-07-02

Applicant: DENSO CORPORATION

Inventor： Hayato Mizoguchi ,  Tsuneo Maebara

IPC: G01R31/00 ,  G01R31/02 ,  A61B5/021 ,  G01L9/00 ,  G01R27/18 ,  G01R1/36

CPC classification number: G01R31/025 ,  A61B5/021 ,  B60L3/0069 ,  B60L3/12 ,  B60L11/1864 ,  B60L2270/147 ,  G01L9/0041 ,  G01R1/36 ,  G01R27/18 ,  G01R31/006 ,  Y02T10/7005 ,  Y02T10/7061

Abstract: An apparatus capable of detecting reduction in insulation resistance between a vehicle body and a high-voltage circuit. In the apparatus, a filter for removing noise included in a potential to ground at a terminal of a coupling capacitor includes a digital filter and an aliasing suppression circuit for suppressing aliasing in the digital filter. In addition, a protection circuit, which protects the digital filter and a determiner operable to detect the reduction in insulation resistance from high-voltage noise generated in the high-voltage circuit, is electrically disposed between a resistor of the aliasing suppression circuit and a signal input of the digital filter, where a potential at a junction between the resistor of the aliasing suppression circuit and the signal input of the digital filter is lower than a potential at the terminal of the coupling capacitor upon application of the high-voltage noise to the apparatus.

Abstract translation: 一种能够检测车身与高压电路之间的绝缘电阻的降低的装置。 在该装置中，用于除去耦合电容器的端子处的接地电位的噪声的滤波器包括数字滤波器和用于抑制数字滤波器中的混叠的混叠抑制电路。 此外，保护数字滤波器的保护电路和可操作以检测绝缘电阻与高压电路中产生的高电压噪声的降低的确定器电气设置在混叠抑制电路的电阻器和信号 数字滤波器的输入，其中混叠抑制电路的电阻和数字滤波器的信号输入之间的结点处的电位低于耦合电容器的端子处的电位，当施加高电压噪声时， 仪器。

公开(公告)号：US11762026B2

公开(公告)日：2023-09-19

申请号：US17244376

申请日：2021-04-29

Applicant: DENSO CORPORATION

Inventor： Toshiki Kojima ,  Masakazu Kouda ,  Hayato Mizoguchi

IPC: G01R31/388 ,  G01R31/364 ,  H01M10/42 ,  H01M10/48

CPC classification number: G01R31/388 ,  G01R31/364 ,  H01M10/425 ,  H01M10/48 ,  H01M10/482

Abstract: A battery monitoring apparatus is used in a battery assembly equipped with a plurality of batteries connected in series with each other. A plurality of measuring lines are mounted on a given layer of a multi-layer substrate and work to measure electrical potentials developed at terminals of the batteries, respectively. The measuring lines are classified into measuring line groups in order of electrical potential from lowest to highest. A plurality of solid patterns are arranged on one of layers of the multi-layer substrate other than the given layer and provided one for each of the measuring line groups. The solid patterns overlap the measuring line groups in planar view in a stacking direction of the multi-layer substrate. The solid patterns are arranged away from each other. The higher electrical potentials of the measuring line groups are, the higher electrical potentials of the corresponding solid patterns are.

公开(公告)号：US11506718B2

公开(公告)日：2022-11-22

申请号：US16523788

申请日：2019-07-26

Applicant: DENSO CORPORATION

Inventor： Masahiko Ito ,  Shunichi Kubo ,  Hayato Mizoguchi

IPC: G01R31/364 ,  G01R1/20 ,  G01R31/396 ,  G01R31/3835 ,  H01M10/48

Abstract: A connection part which connects a terminal part and a processing part include an equalization resistor that is inserted into each main line and a 0-Ω resistor that is a short circuit line for short circuiting a main line of a first terminal and a main line of a second terminal. In the terminal part, the second terminal s unused, and a battery cell adjacent to a high-potential side of a stack bar is connected between the first terminal and a third terminal.

公开(公告)号：US10205315B2

公开(公告)日：2019-02-12

申请号：US15206419

申请日：2016-07-11

Applicant: DENSO CORPORATION

Inventor： Hayato Mizoguchi ,  Takashi Inamoto

IPC: H02H3/16 ,  H02H1/06 ,  H02H11/00 ,  B60L3/00

Abstract: A fault detection system is provided which includes power lines connecting between a DC power supply and electric equipment, switches respectively provided to the power lines, a capacitor connected to the power lines at a position where a distance to the electric equipment is shorter than a distance between the switches and the electric equipment, a charging unit charging the capacitor before the switches are turned on, a detection section connected to the power line at a connecting point where a distance to the DC power supply is shorter than a distance between the switches and the DC power supply, and detecting a change in an electric potential of the connecting point, and a determination section determining whether a short-circuit fault has occurred in any one of the switches based on a difference in the electric potential of the connecting point between before and after the capacitor is charged.

公开(公告)号：US11460508B2

公开(公告)日：2022-10-04

申请号：US16804550

申请日：2020-02-28

Applicant: DENSO CORPORATION

Inventor： Shinsuke Kawamoto ,  Hayato Mizoguchi

IPC: G01R31/3835 ,  G01R31/396 ,  H04W4/40 ,  G07C5/08 ,  G07C5/00

Abstract: In an identifier assignment system for assigning identifiers to respective voltage monitors to be connected to respective battery units, each measuring unit measures elapsed time information indicative of an elapsed time that has elapsed since a predetermined point of time after an activation of the corresponding voltage monitor based on power supplied from the corresponding battery unit connected to the corresponding voltage monitor. Each measuring unit is also configured to wirelessly transmit the elapsed time information about the corresponding voltage monitor. A comparison unit performs a comparison task of comparing the elapsed times of the respective voltage monitors with each other. An assignment unit is configured to assign unique identifiers to the respective voltage monitors in accordance with a result of the comparison task.

公开(公告)号：US11231464B2

公开(公告)日：2022-01-25

申请号：US16439998

申请日：2019-06-13

Applicant: DENSO CORPORATION

Inventor： Masakazu Kouda ,  Shinsuke Kawamoto ,  Hayato Mizoguchi ,  Ryo Yamakawa

IPC: H02J7/00 ,  G01R31/364 ,  G01R31/3828 ,  G01R31/396 ,  G01R31/388 ,  G01R19/165 ,  B60L58/12

Abstract: A monitoring apparatus includes: a monitoring portion that monitors a voltage of each of battery cells connected in series, each of the battery cells having an electrode terminal; and a wiring portion that connects the monitoring portion and the electrode terminal. The wiring portion includes a first flexible substrate and a second substrate that have flexibility and are integrally linked with each other. A linking part where the first flexible substrate and the second flexible substrate are linked is bent. The first flexible substrate is connected with the electrode terminal. The second flexible substrate is connected with the monitoring portion. One of the first flexible substrate and the second flexible substrate includes an arm. Another of the first flexible substrate and the second flexible substrate other than the one including the arm includes a slit. The arm is fixed to the slit, causing the linking part to be reinforced.