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公开(公告)号：US20240088702A1
公开(公告)日：2024-03-14
申请号：US18517157
申请日：2023-11-22
Applicant: DENSO CORPORATION
Inventor： Kazuhiro SHIRAKAWA , Keiya TANI , Shunichi KUBO
CPC classification number: H02J7/02 , H02M3/33569 , H02J2207/20
Abstract: An electrical charging apparatus working to electrically charge an electrical storage device includes an electrical power converter and a controller. The electrical power converter converts an alternating-current input voltage into a direct-current voltage and outputs it to the electrical storage device. The controller works to control the electrical power converter to pulsate the charging current supplied from the electrical power converter to the electrical storage device. The controller also controls the electrical power converter to set a pulsation frequency of the charging current to an integral multiple of the frequency of the input voltage and also to bring a phase difference between a zero-crossing time of the input voltage and a time when the charging current is minimized to be smaller than or equal to one-eighth of one cycle of the input voltage.
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公开(公告)号：US20170117596A1
公开(公告)日：2017-04-27
申请号：US15331370
申请日：2016-10-21
Applicant: DENSO CORPORATION
Inventor： Shunichi KUBO
CPC classification number: H01M10/482 , G01R31/04 , G01R31/396 , H01M10/425 , H01M10/4285 , H01M2220/20
Abstract: An abnormality determination apparatus is applied to a battery pack including blocks composed of battery cells connected in series, and a connecting member that connect blocks to one another in series. In the blocks and the connecting member, a first detection circuit detects a voltage of a first series circuit including the connecting member. A closed-circuit forming unit forms a closed circuit so as to allow a current to flow to the connecting member. The closed circuit includes the connecting member, at least one of the battery cells, and a diode connected in parallel to connecting member. When a charge-discharge current is not flowing to the battery pack, a first abnormality determining unit determines whether or not an open abnormality has occurred in the connecting member, based on a detection value from the first detection circuit in a state in which the closed-circuit forming unit is forming the closed circuit.
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公开(公告)号：US20250149997A1
公开(公告)日：2025-05-08
申请号：US19001708
申请日：2024-12-26
Applicant: DENSO CORPORATION
Inventor： Mitsutaka ITO , Shunichi KUBO
IPC: H02M7/483
Abstract: An inverter control device includes: a determination section determining whether a rise in temperature of a temperature-raising object is required; and a control section performing, in response the rise in temperature being determined to be required, a temperature-raising control including a first mode and a second mode executed after the first mode. In the first mode and the second mode, in the phases, the upper arm switch section in a first specific phase is turned on while the upper arm switch section in a phase other than the first specific phase is turned off. In the first mode, in the phases, the lower arm switch section in a second specific phase is turned on while the lower arm switch section in a phase other than the second specific phase is turned off. In the second mode, the respective lower arm switch sections in the phases are turned off.
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公开(公告)号：US20250105750A1
公开(公告)日：2025-03-27
申请号：US18975468
申请日：2024-12-10
Applicant: DENSO CORPORATION
Inventor： Kazuma SUZUKI , Shunichi KUBO
Abstract: A power conversion device includes low voltage terminals and high voltage terminals. The power conversion device includes: a voltage increasing operation unit increasing the voltage input to the low voltage terminals and outputting the increased voltage to the high voltage terminals, a voltage decreasing operation unit decreasing the voltage input to the high voltage terminals and outputting the decreased voltage to the low voltage terminals, and a control unit performing a temperature increasing operation to increase a temperature of a temperature increasing object, by causing the voltage increasing operation unit to perform a voltage increasing operation and the voltage decreasing operation unit to perform a voltage decreasing operation.
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公开(公告)号：US20240174089A1
公开(公告)日：2024-05-30
申请号：US18432844
申请日：2024-02-05
Applicant: DENSO CORPORATION
Inventor： Keiya TANI , Shunichi KUBO
IPC: B60L50/51 , B60L50/60 , H02M1/088 , H02M7/5387
CPC classification number: B60L50/51 , B60L50/66 , H02M1/088 , H02M7/53873 , B60L2210/42
Abstract: A power conversion device is applicable to three or more charge storage units connected in series. The power conversion device includes: a rotating electric machine including a stator winding; an inverter including upper and lower arm switches and connecting the stator winding and the charge storage units; a high potential path connected to a high potential terminal of the upper arm switch; a low potential path connected to a low potential terminal of the lower arm switch; a neutral point path connected to a neutral point of the stator winding; and neutral point switches installed individually corresponding to cell connection points each between a positive electrode terminal and a negative electrode terminal of adjacent charge storage units in the charge storage units, the neutral point switches connecting the cell connection points and the neutral point path.
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Patent Agency Ranking
公开(公告)号：US20220352569A1
公开(公告)日：2022-11-03
申请号：US17863696
申请日：2022-07-13
Applicant: DENSO CORPORATION
Inventor： Naoto YAMASHITA , Masakazu KOUDA , Fumihiko HORI , Shunichi KUBO
Abstract: In a battery system including an assembled battery having a plurality of battery cells connected in series, each of a plurality of monitoring units includes a voltage classification unit configured to classify a terminal voltage between each pair of input terminals in the monitoring unit as a cell voltage or as a zero voltage that is a terminal voltage of substantially zero. The input terminals in each of all or all but one of the monitoring units include at least one specific terminal pair for acquiring the zero voltage at a different position and/or include a different number of specific terminal pairs for acquiring the zero voltage. Each of the plurality of monitoring units further includes an identifier generation unit configured to generate an identifier based on at least one of the position of the at least one specific terminal pair and the number of specific terminal pairs.
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公开(公告)号：US20220320612A1
公开(公告)日：2022-10-06
申请号：US17844946
申请日：2022-06-21
Applicant: DENSO CORPORATION
Inventor： Tatsuhiro NUMATA , Shunichi KUBO
Abstract: In a battery monitoring system including a plurality of battery modules each including one or more cells, the battery modules are connected in series to each other. The battery monitoring system monitors the state of each cell based on the voltage value of the cell and the current value of the battery modules. A current detection unit detects the current value. Each voltage detection unit is associated with the corresponding one of the battery modules and detects the voltage value. Each slave unit is associated with the corresponding one of the battery modules, and wirelessly transmits information including synchronous current and voltage values detected by the current detection unit and the voltage detection unit. A master unit receives the information transmitted from the slave units. A central monitoring unit receives the information received by the master unit.
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公开(公告)号：US20220131389A1
公开(公告)日：2022-04-28
申请号：US17502315
申请日：2021-10-15
Applicant: DENSO CORPORATION
Inventor： Shogo SHIGEMORI , Shunichi KUBO , Takeshi IIDA , Yukihiro TOMONAGA , Taisuke KURACHI , Shozo SUZUKI , Shinya KATO
IPC: H02J7/00 , H01M10/48 , G01R31/392 , G01R31/3842 , H01M10/42
Abstract: A battery management device is configured to set a limited measurement range that limits a range for measuring a voltage of each of a plurality of batteries for a vehicle. The battery management device is configured to measure the voltage of each of the plurality of batteries within the limited measurement range.
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公开(公告)号：US20200235442A1
公开(公告)日：2020-07-23
申请号：US16744462
申请日：2020-01-16
Applicant: DENSO CORPORATION
Inventor： Naoto YAMASHITA , Masakazu KOUDA , Fumihiko HORI , Shunichi KUBO
Abstract: In a battery system including an assembled battery having a plurality of battery cells connected in series, each of a plurality of monitoring units includes a voltage classification unit configured to classify a terminal voltage between each pair of input terminals in the monitoring unit as a cell voltage or as a zero voltage that is a terminal voltage of substantially zero. The input terminals in each of all or all but one of the monitoring units include at least one specific terminal pair for acquiring the zero voltage at a different position and/or include a different number of specific terminal pairs for acquiring the zero voltage. Each of the plurality of monitoring units further includes an identifier generation unit configured to generate an identifier based on at least one of the position of the at least one specific terminal pair and the number of specific terminal pairs.
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公开(公告)号：US20250167705A1
公开(公告)日：2025-05-22
申请号：US19007873
申请日：2025-01-02
Applicant: DENSO CORPORATION
Inventor： Ryoya HASHIZUME , Shunichi KUBO
Abstract: A control device is applied to a system including a power storage unit, a plurality of power converters, a rotating electric machine having windings electrically connected to each of the power converters, and a heat transfer unit that transfers heat generated in at least one of the power converters to a target to be heated. The control device includes a determination unit that determines whether there is a temperature increase request for a target to be heated, and a control unit that, when it is determined that there is a temperature increase request, performs switching control of each power converter so as to pass AC d-axis and q-axis currents through the windings while maintaining a rotor of the rotating electric machine in a stopped state from rotating.
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