公开(公告)号：US20230358949A1

公开(公告)日：2023-11-09

申请号：US18353376

申请日：2023-07-17

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Kazunori MUKASA ,  Minoru KASAHARA ,  Keiichi AISO ,  Yukihiro TSUCHIDA ,  Naoya YOMOGITA ,  Takumi SUGANE ,  Ichihiko SUGANUMA ,  Tomoaki GONOHE ,  Mitsuhiro IWAYA ,  Zoltan VARALLYAY ,  Tamas MIHALFFY

IPC: G02B6/02 ,  G02B6/036

CPC classification number: G02B6/02395 ,  G02B6/02019 ,  G02B6/03627

Abstract: An optical fiber includes: a core portion made of glass; a side core layer made of glass and enclosing the core portion; a cladding portion made of glass and enclosing the side core layer; and a coating layer including a primary layer made of resin and enclosing the cladding portion, and a secondary layer made of resin and enclosing the primary layer. The relationships Δ1>ΔClad>Δ2 and 0>Δ2 are satisfied where Δ1 represents relative refractive-index difference of average maximum refractive index of the core portion with respect to average refractive index of the cladding portion, Δ2 represents relative refractive-index difference of average refractive index of the side core layer with respect to average refractive index of the cladding portion, and ΔClad represents relative refractive-index difference of average refractive index of the cladding portion with respect to refractive index of pure silica glass.

公开(公告)号：US20150377978A1

公开(公告)日：2015-12-31

申请号：US14846682

申请日：2015-09-04

Applicant: FURUKAWA ELECTRIC CO., LTD. ,  FURUKAWA AUTOMOTIVE SYSTEMS INC.

Inventor： Taiji MITSUYAMA ,  Noriyasu IWANE ,  Koichi YOKOYAMA ,  Naoya TAKASHIMA ,  Antal KOVATS ,  Tamas MIHALFFY ,  Lorand ROMVARI

IPC: G01R31/36 ,  H02J7/00

CPC classification number: G01R31/392 ,  G01R31/3648 ,  G01R31/3842 ,  G01R31/389 ,  H01M10/44 ,  H01M10/48 ,  H02J7/0021 ,  H02J7/007

Abstract: To provide a secondary battery state detecting device that decreases the deterioration in capacity of the secondary battery and is low in arithmetic cost.A secondary battery state detecting device that detects a state of a secondary battery includes discharge means (discharge circuit (15)) for subjecting the secondary battery (14) to a pulse discharge, acquiring means (controller (10)) for controlling the discharge means to subject the secondary battery to at least one pulse discharge, and acquiring a time variation of a voltage value at that time, calculating means (controller (10)) for calculating a parameter of a predetermined function having time as a variable by fitting the variation of the voltage value acquired by the acquiring means using the predetermined function, and detecting means (controller (10)) for detecting the state of the secondary battery on the basis of the parameter of the predetermined function calculated by the calculating means.

Abstract translation: 提供二次电池状态检测装置，其降低二次电池的容量的劣化，并且算术成本低。 检测二次电池的状态的二次电池状态检测装置包括用于对二次电池（14）进行脉冲放电的放电装置（放电电路（15）），用于控制放电装置的控制器（控制器（10）） 使二次电池进行至少一个脉冲放电，并且获取该时刻的电压值的时间变化，计算装置（控制器（10）），用于通过拟合变化来计算具有时间作为变量的预定函数的参数 以及根据由计算装置计算的预定功能的参数来检测二次电池的状态的检测装置（控制器（10））。

公开(公告)号：US20160003912A1

公开(公告)日：2016-01-07

申请号：US14852329

申请日：2015-09-11

Applicant: FURUKAWA ELECTRIC CO., LTD. ,  FURUKAWA AUTOMOTIVE SYSTEMS INC.

Inventor： Noriyasu IWANE ,  Koichi YOKOYAMA ,  Naoya TAKASHIMA ,  Taiji MITSUYAMA ,  Antal KOVATS ,  Tamas MIHALFFY ,  Lorand ROMVARI

IPC: G01R31/36 ,  H01M10/48

CPC classification number: G01R31/3648 ,  G01R31/367 ,  G01R31/3842 ,  G01R31/389 ,  G01R31/392 ,  H01M10/48 ,  H02J7/0021

Abstract: [Object] To detect states of a plurality of secondary batteries whose kinds are different with high accuracy.[Organization] A measurement unit (voltage sensor 11, current sensor 12) measuring a current value of a current flowing at a secondary battery 14 and a voltage value of a voltage generated at the secondary battery by the current in a predetermined frequency; an optimization unit (CPU 10a) optimizing element constants of an equivalent circuit model of the secondary battery based on the measured voltage value and the current value; an identification unit (CPU 10a) identifying a kind of the secondary battery with reference to the optimized element constants of the equivalent circuit model; a storage unit (ROM 10b) storing detection formulas which detect the state of the secondary battery by each kind of the secondary battery; an acquisition unit (CPU 10a) acquiring the detection formula corresponding to the identified kind from the storage unit; and a detection unit (CPU 10a) detecting the state of the secondary battery by applying the element constants to the acquired detection formula, are included.

Abstract translation: 检测种类不同的高精度的多个二次电池的状态。 [组织]测量在二次电池14上流过的电流的电流值的测量单元（电压传感器11，电流传感器12）和以预定频率通过电流在二次电池处产生的电压的电压值; 基于测量的电压值和当前值优化二次电池的等效电路模型的元件常数的优化单元（CPU 10a）; 参照所述等效电路模型的优化元件常数识别二次电池的种类的识别单元（CPU 10a）; 存储单元（ROM 10b），存储检测由各种二次电池检测二次电池的状态的检测公式; 获取单元（CPU 10a）从存储单元获取与所识别的类型相对应的检测公式; 并且包括通过将元件常数应用于获取的检测公式来检测二次电池的状态的检测单元（CPU 10a）。

公开(公告)号：US20130154577A1

公开(公告)日：2013-06-20

申请号：US13769636

申请日：2013-02-18

Applicant: Furukawa Electric Co., Ltd. ,  Furukawa Automotive Systems Inc.

Inventor： Noriyasu IWANE ,  Taiji MITSUYAMA ,  Shinichi NOMOTO ,  Mamichi TSUYUKI ,  Etsuzo SATO ,  Tamas MIHALFFY ,  Antal KOVATS

IPC: H02J7/00

CPC classification number: H02J7/0052 ,  G01R31/3624 ,  G01R31/3651 ,  H01M10/425 ,  H01M10/48 ,  H01M2010/4271 ,  H02J7/0077 ,  H02J7/045 ,  H02J2007/0049

Abstract: A full charge sensing apparatus for sensing a fully charged state of a secondary battery based on an equivalent circuit model of the secondary battery includes a measuring unit that measures a voltage and a current during charging of the secondary battery, a learning unit that performs a learning process on a plurality of parameters in the equivalent circuit model using a result of measurement of the measuring unit, and a determining unit that determines that the secondary battery is in a fully charged state in a case where, among the parameters on which the learning process has been performed by the learning unit, a parameter corresponding to a reaction resistance of the secondary battery is greater than a predetermined threshold.

Abstract translation: 用于基于二次电池的等效电路模型来感测二次电池的完全充电状态的完全充电感测装置包括测量二次电池充电期间的电压和电流的测量单元，执行学习的学习单元 使用测量单元的测量结果对等效电路模型中的多个参数进行处理;以及确定单元，其在以下情况下确定二次电池处于完全充电状态：在学习过程的参数中 已经由学习单元执行，与二次电池的反应电阻相对应的参数大于预定阈值。

公开(公告)号：US20220179150A1

公开(公告)日：2022-06-09

申请号：US17651979

申请日：2022-02-22

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Kazunori MUKASA ,  Tamas MIHALFFY ,  Zoltan VARALLYAY

IPC: G02B6/02 ,  C03C25/1065

Abstract: An optical fiber includes: a core made of silica based glass; a cladding made of silica based glass, the cladding having a refractive index that is lower than a maximum refractive index of the core; and a coating including a primary coating layer, and a secondary coating layer. An outer diameter of the cladding is less than 100 μm. A thickness of the primary coating layer is larger than or equal to 15 μm. A mode field diameter at a wavelength of 1310 nm is larger than or equal to 8.6 μm and smaller than or equal to 9.2 μm. An effective cutoff wavelength is smaller than or equal to 1260 μm. A bending loss at a wavelength of 1550 nm when bending is made at a diameter of 60 mm is smaller than or equal to 0.1 dB/100 turn.

公开(公告)号：US20220082753A1

公开(公告)日：2022-03-17

申请号：US17456601

申请日：2021-11-26

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Kazunori MUKASA ,  Tamas MIHALFFY ,  Zoltan VARALLYAY

IPC: G02B6/02

Abstract: An optical fiber includes: a core made of silica-based glass; a cladding configured to cover an outer circumference of the core and made of silica-based glass having a refractive index smaller than a maximum refractive index of the core; and a coating configured to cover an outer circumference of the cladding. The cladding has an outer diameter of 120 μm or smaller, a mode field diameter at a wavelength of 1310 nm is 8.6 μm to 9.2 μm, an effective cut-off wavelength is 1260 μm or smaller, and a bending loss at a wavelength of 1550 nm in a case of bending at a diameter of 20 mm is 0.75 dB/turn or smaller.