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Patent Agency Ranking
公开(公告)号：US20150160301A1
公开(公告)日：2015-06-11
申请号：US14563032
申请日：2014-12-08
Applicant: DENSO CORPORATION
Inventor： Yoshikazu Kusano , Hisashi Umemoto , Naomi Awano , Manabu Yamada
CPC classification number: G01R31/3624 , H02J7/007 , H02J7/0081 , H02J7/14
Abstract: A battery control device calculates a chargeable/dischargeable electric power of a rechargeable battery at the timing after elapse of a predetermined period of time when a terminal voltage of the rechargeable battery changes by charging/discharging of the rechargeable battery during the predetermined period of time. The battery control device calculates a specific change amount of the terminal voltage caused by electric charge accumulation in the rechargeable battery after the elapse of the predetermined period of time when the charging/discharging of the rechargeable battery is performed. Further, the battery control device calculates an estimated target value of a current necessary for changing the terminal voltage to a predetermined target voltage or the terminal voltage after the elapse of the predetermined period of time by using the calculated specific change amount, and calculates chargeable/dischargeable electric power on the basis of the calculated estimated target value.
Abstract translation: 电池控制装置在预定时间段内通过在可再充电电池的充电/放电而改变可再充电电池的端子电压的预定时间段之后的时刻计算充电电池的可充放电电力。 电池控制装置计算在执行充电/放电的预定时间段之后由可再充电电池中的电荷累积引起的端子电压的特定变化量。 此外，电池控制装置通过使用计算出的特定变化量来计算将端子电压改变为预定目标电压或经过预定时间段之后的端子电压所需的电流的估计目标值，并且计算可充电/ 基于所计算的估计目标值的可放电电力。
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公开(公告)号：US12191739B2
公开(公告)日：2025-01-07
申请号：US17385789
申请日：2021-07-26
Applicant: DENSO CORPORATION
Inventor： Shusei Nishimura , Seiji Iyasu , Hisashi Umemoto , Atsushi Fukaya
Abstract: A power conversion apparatus includes: a rotating electric machine that has a winding; an inverter that has a series-connection body of an upper arm switch and a lower arm switch; and a capacitor that is connected in parallel to the series-connection body. The power conversion apparatus includes: a connection path that, in a first storage battery and a second storage battery that are connected in series, electrically connects the winding with both a negative-electrode side of the first storage battery and a positive-electrode side of the second storage battery; and a control unit that controls switching of the upper arm switch and the lower arm switch such that a current flows between the first storage battery and the second storage battery through the inverter, the winding, and the connection path.
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公开(公告)号：US10379165B2
公开(公告)日：2019-08-13
申请号：US14534259
申请日：2014-11-06
Applicant: DENSO CORPORATION
Inventor： Yoshikazu Kusano , Hisashi Umemoto , Naomi Awano , Manabu Yamada
IPC: G06F19/00 , G01R31/36 , G01R31/367 , G06N20/00 , G01R31/382
Abstract: A battery characteristics learning apparatus is provided for calculating learning values of circuit constants of an equivalent circuit of a rechargeable battery. The apparatus includes: (1) means for acquiring values of terminal voltage of the battery sensed by voltage-sensing means and values of current of the battery sensed by current-sensing means and storing the acquired values in time series; (2) means for determining, based on the acquired values of the current, whether there has occurred a predetermined change in the current; and (3) means for calculating, when it is determined that the predetermined change has occurred, the learning values of the circuit constants based on those values of the terminal voltage and the current which are acquired at sampling time points or during sampling periods, each of the sampling time points and the sampling periods being set according to a corresponding one of time constants defined by the circuit constants.
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公开(公告)号：US09618584B2
公开(公告)日：2017-04-11
申请号：US14563032
申请日：2014-12-08
Applicant: DENSO CORPORATION
Inventor： Yoshikazu Kusano , Hisashi Umemoto , Naomi Awano , Manabu Yamada
CPC classification number: G01R31/3624 , H02J7/007 , H02J7/0081 , H02J7/14
Abstract: A battery control device calculates a chargeable/dischargeable electric power of a rechargeable battery at the timing after elapse of a predetermined period of time when a terminal voltage of the rechargeable battery changes by charging/discharging of the rechargeable battery during the predetermined period of time. The battery control device calculates a specific change amount of the terminal voltage caused by electric charge accumulation in the rechargeable battery after the elapse of the predetermined period of time when the charging/discharging of the rechargeable battery is performed. Further, the battery control device calculates an estimated target value of a current necessary for changing the terminal voltage to a predetermined target voltage or the terminal voltage after the elapse of the predetermined period of time by using the calculated specific change amount, and calculates chargeable/dischargeable electric power on the basis of the calculated estimated target value.
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公开(公告)号：US11916502B2
公开(公告)日：2024-02-27
申请号：US17565140
申请日：2021-12-29
Applicant: DENSO CORPORATION
Inventor： Mitsutaka Ito , Atsushi Fukaya , Hisashi Umemoto
IPC: H01M16/00 , H02P27/08 , H02P29/60 , H01M50/507 , H01M10/0525 , H01M10/42 , H01M10/46 , H01M10/48
CPC classification number: H02P27/08 , H01M10/0525 , H01M10/425 , H01M10/46 , H01M10/486 , H01M50/507 , H02P29/60 , H01M2220/20
Abstract: An electric power conversion apparatus includes a rotating electric machine including armature windings, a first inverter connecting the armature windings with a first storage battery, a second inverter connecting the armature windings with a second storage battery, a changeover switch configured to connect or disconnect between first and second positive buses or between first and second negative buses, and an operating unit configured to perform, with the changeover switch being in an ON state, first and second energization processes alternately. In the first energization process, electric current is supplied from the first storage battery to the second storage battery via the first inverter, at least one of the armature windings and the second inverter. In the second energization process, electric current is supplied from the second storage battery to the first storage battery via the second inverter, at least one of the armature windings and the first inverter.
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