Title:
RECHARGEABLE BATTERY STATE DETECTION DEVICE AND RECHARGEABLE BATTERY STATE DETECTION METHOD
Document Type and Number:
Japanese Patent JP2020078179
Kind Code:
A
Abstract:
To accurately estimate the state of a rechargeable battery regardless of the type of a rechargeable battery.SOLUTION: A rechargeable battery state detection device includes control means that supplies a control signal to a discharge circuit that discharges a rechargeable battery to pulse-discharge the rechargeable battery, receiving means that receives a voltage signal from a voltage sensor that detects a terminal voltage of the rechargeable battery and a current signal from a current sensor that detects a charge/discharge current of the rechargeable battery, detection means that detects a variation value between a voltage before the chargeable battery is pulse-discharged by the discharge circuit and a voltage of the chargeable battery during or after the discharge, determining means that determines whether the rechargeable battery is charged or discharged between a first time point and a second time point thereafter, estimation means that estimates the charge state of the rechargeable battery on the basis of a first variation value detected at the first time point, a second variation value detected at the second time point, and the determination result of the determination means, and output means that outputs the estimation result.SELECTED DRAWING: Figure 1
More Like This:
| JP5549148 | A voltage adjustment method of a rechargeable battery |
| JPH10257688 | BATTERY CHARGING DEVICE |
| WO/2012/120750 | ELECTRIC TOOL USING SECONDARY CELLS AS POWER SOURCE |
Inventors:
UCHINO NAOTAKA
Application Number:
JP2018210125A
Publication Date:
May 21, 2020
Filing Date:
November 07, 2018
Export Citation:
Assignee:
FURUKAWA ELECTRIC CO LTD
FURUKAWA AUTOMOTIVE SYSTEMS INC
FURUKAWA AUTOMOTIVE SYSTEMS INC
International Classes:
H02J7/04; G01R31/36; H01M10/44; H01M10/48
Domestic Patent References:
| JP2004056945A | 2004-02-19 | |||
| JP2010008133A | 2010-01-14 | |||
| JP2012141258A | 2012-07-26 | |||
| JP2016091830A | 2016-05-23 |
Attorney, Agent or Firm:
Takuya Saito
Kiyoshi Kuruma
Yoshihiko Emura
Megumi Okubo
Kiyoshi Kuruma
Yoshihiko Emura
Megumi Okubo