Apparatus and method for calculating degradation degree

Patent metadata

Field	Value
Publication number	US-2016299197-A1
Application number	US-201514927058-A
Country	US
Kind code	A1
Filing date	Oct 29, 2015
Priority date	Apr 8, 2015
Publication date	Oct 13, 2016
Grant date	—

Abstract

An apparatus for calculating a degradation degree is provided and includes a battery and a measurer that senses the battery to generate behavior information. The apparatus further includes a calculator that divides the behavior information into a plurality of sections and calculates a behavior change quantity in each section and/or charging capacity in each section of the behavior information in each section. The calculator uses the behavior change quantity in each section and the charging capacity in each section to determine the degradation degrees of the battery in each section, and use the degradation degrees of the battery within each section to generate a final degradation degree of the battery.

First claim

What is claimed is:

1 . An apparatus for calculating a degradation degree, comprising:
a battery; a measurer configured to sense the battery to generate behavior information; a calculator configured to divide the behavior information into a plurality of sections, and calculate a behavior change quantity in each section or charging capacity in each section of the behavior information in each section, use the behavior change quantity in each section and the charging capacity in each section to calculate the degradation degrees of the battery in each section, and use the degradation degrees of the battery in each section to calculate a final degradation degree of the battery.

2 . The apparatus of claim 1 , wherein the behavior information includes a voltage, a current, and a temperature of the battery.

3 . The apparatus of claim 2 , wherein the calculator includes:
a behavior change calculator configured to determine an initial voltage reference section among the plurality of sections based on a confirmation of a preset temperature condition and calculates a voltage change quantity to the current in each section based on the initial voltage reference section; and a battery degradation calculator configured to calculate the charging capacity in each section corresponding to a voltage change rate in each section to calculate the degradation degree of the battery in each section.

4 . The apparatus of claim 3 , wherein the charging capacity in each section is calculated using an initially measured charging capacity.

5 . The apparatus of claim 4 , wherein the initial charging capacity is adjusted based on a mileage of a vehicle.

6 . The apparatus of claim 4 , wherein the degradation degree of the battery in each section is calculated by dividing the charging capacity in the corresponding section by the initial charging capacity.

7 . The apparatus of claim 1 , wherein the degradation degree of the battery in each section is calculated using a section in which the calculation is made among the plurality of sections and the final degradation degree is based on an average value of the degradation degrees of the battery in each section.

8 . The apparatus of claim 1 , further comprising:
an output unit configured to output the final degradation degree as a combination of characters, voices, and graphics.

9 . The apparatus of claim 1 , wherein the plurality of sections are formed by dividing the behavior information based on a point where non-linear characteristics are generated.

10 . The apparatus of claim 2 , wherein the behavior change quantity in each section is a value obtained by converting a voltage in each section into a current value.

11 . A method for calculating a degradation degree, comprising:
sensing, by a measurer, a battery to generate behavior information; determining, by a calculator, degradation degrees of the battery in each section by dividing the behavior information into a plurality of sections; calculating by a behavior change quantity in each section or charging capacity in each section of the behavior information in each section; using the behavior change quantity in each section and the charging capacity in each section; and calculating, by the calculator, a final degradation degree of the battery by using the degradation degrees of the battery in each section.

12 . The method of claim 11 , wherein the behavior information includes a voltage, a current, and a temperature of the battery.

13 . The method of claim 12 , wherein the calculation of the degradation degree in each section includes:
calculating, by a voltage change quantity to the current in each section by determining an initial voltage reference section among the plurality of sections based on a confirmation of a preset temperature condition and using the initial voltage reference section; and calculating, by the degradation degree of the battery in each section by calculating the charging capacity in each section that corresponds to a voltage adjustment rate in each section.

14 . The method of claim 13 , wherein the charging capacity in each section is calculated using initially measured charging capacity.

15 . The method of claim 14 , wherein the initial charging capacity is adjusted based on a mileage of a vehicle.

16 . The method of claim 14 , wherein the degradation degree of the battery in each section is calculated by dividing the charging capacity in the corresponding section by the initial charging capacity.

17 . The method of claim 11 , wherein the degradation degree of the battery in each section is calculated using a section in which the calculation is made among the plurality of sections and the final degradation degree is determined based on an average value of the degradation degrees of the battery in the plurality of sections.

18 . The method of claim 11 , further comprising:
outputting, by the final degradation degree to an output unit as a combination of characters, voices, and graphics.

19 . The method of claim 11 , wherein the plurality of sections is formed by dividing the behavior information based on a point where non-linear characteristics are generated.

20 . The method of claim 12 , wherein the behavior change quantity in each section is a value obtained by converting a voltage in each section into a value for current.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Kim Woo-Sung

Classifications

• G01R31/3648

  comprising digital calculation means, e.g. for performing an algorithm · CPC title

• B60L11/1851

  Operations & Transport · mapped topic

• G01R31/3679 Primary

  Physics · mapped topic

• G01R31/367

  Software therefor, e.g. for battery testing using modelling or look-up tables · CPC title

• G01R31/371

  with remote indication, e.g. on external chargers · CPC title