Title:
BATTERY MONITORING DEVICE
Document Type and Number:
Japanese Patent JP2020046332
Kind Code:
A
Abstract:
To provide a battery monitoring device with which it is possible to make the most of the battery performance that a battery inherently has.SOLUTION: A battery monitoring device 3 acquires the present value (4.0 V) of a cell voltage when a battery B is charged for over 60 minutes with a constant current IJ when the change width of a cell voltage in a prescribed period (e.g., 60 minutes), for example, when a cell voltage is 2.2 V as in Fig. 1(b), at the time the battery B is charged with a prescribed charge current (constant current IJ), and acquires the present SOC curve (present characteristic) shown in a dashed line graph on the basis of the present value (4.0 V) and a previously stored initial SOC curve. The battery monitoring device 3 changes the cell voltage lower-limit value and/or cell voltage upper-limit value in accordance with a change of the SOC curve so that the battery power use range is not narrowed by use of the battery B.SELECTED DRAWING: Figure 1
Inventors:
TSUCHIYA SHINGO
KAMATA SEIJI
KAMATA SEIJI
Application Number:
JP2018175801A
Publication Date:
March 26, 2020
Filing Date:
September 20, 2018
Export Citation:
Assignee:
KEIHIN CORP
International Classes:
G01R31/36; H01M10/42; H01M10/48; H02J7/00
Attorney, Agent or Firm:
Shu Oikawa
Yuichiro Shimizu
Hisanori Takahashi
Yuichiro Shimizu
Hisanori Takahashi