-
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。
-
公开(公告)号：US10923774B2
公开(公告)日：2021-02-16
申请号：US15914312
申请日：2018-03-07
Applicant: DENSO CORPORATION
Inventor： Yoshikazu Kusano , Koji Ohira , Naomi Awano
IPC: H01M10/44 , H01M10/48 , H01M10/42 , G01R31/36 , G01R19/165 , G01R31/3828 , G01R31/3842 , G01R31/374
Abstract: A battery state estimating device estimates a battery state in a battery module having a plurality of secondary batteries. The battery state estimating device is configured to be able to change a number of targets which is a number of the secondary batteries subject to estimation of the battery state of the secondary battery based on a specific value acquired from the plurality of secondary batteries, or the battery state estimating device is configured to be able to change a calculation formula for estimating the battery state of the battery to a calculation formula with a small calculation load.
-
Patent Agency Ranking
公开(公告)号：US11047917B2
公开(公告)日：2021-06-29
申请号：US16558605
申请日：2019-09-03
Applicant: DENSO CORPORATION
Inventor： Yoshikazu Kusano , Koji Ohira
IPC: G01R31/392 , G01R31/367
Abstract: A power supply system is provided with a secondary battery, a memory unit, a calculation unit and a SOC characteristics acquiring unit. The memory unit stores initial characteristics data having a relationship between the open circuit voltage and the capacity for the secondary battery before being deteriorated. The calculation unit utilizes the initial characteristics data to calculate a deteriorated characteristics data which is a relationship between the open circuit voltage and the capacity of the deteriorated secondary battery. The SOC characteristics acquiring unit acquires the relationship between the open circuit voltage and the state of charge of the deteriorated secondary battery by dividing the capacity value included in the deteriorated characteristics data by the fully charged capacity of the deteriorated secondary battery.
-
公开(公告)号：US10901040B2
公开(公告)日：2021-01-26
申请号：US15921312
申请日：2018-03-14
Applicant: DENSO CORPORATION
Inventor： Yoshikazu Kusano , Koji Ohira , Naomi Awano
IPC: G01R31/382
Abstract: A battery state estimating device periodically estimates a battery state of a secondary battery. The battery state estimating device has a current amount acquiring section, a threshold amount memory, a current amount comparing section, a cycle setting section, and a battery state estimating section. The current amount acquiring section acquires a current amount flowing in the secondary battery. At least one current threshold amount is stored in advance in the threshold amount memory. The current amount comparing section compares the current amount acquired by the current amount acquiring section with the current threshold amount stored in the threshold amount memory. The cycle setting section sets an estimation cycle for estimating the state of the secondary battery based on this comparison result. The battery state estimating section periodically estimates the battery state of the secondary battery based on the estimation cycle set by the cycle setting section.
-
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.
-
公开(公告)号：US10276868B2
公开(公告)日：2019-04-30
申请号：US15367659
申请日：2016-12-02
Applicant: DENSO CORPORATION
Inventor： Nobuo Yamamoto , Yoshikazu Kusano , Yoshinori Sato
Abstract: A non-aqueous rechargeable battery has a non-aqueous electrolyte and positive and negative electrodes capable of intercalating and deintercalating lithium ions. The positive electrode contains a lithium transition metal oxide expressed by Li2-xNiαM1βM2y O4-ε,where 0.50
-
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.
-
-
-
-
-
-
Search Results
7
records
(took 0.019 seconds)
