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Apparatus and method for determining degradation of high-voltage vehicle battery

A technology of deterioration judgment and storage battery, which is applied to measuring devices, secondary batteries, electrochemical generators, etc., can solve problems such as errors and achieve the effect of simplifying the estimation algorithm

Active Publication Date: 2015-05-06
HYUNDAI MOBIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0020] However, in the traditional technology, the charging capacity change rate of the battery voltage change can only be tabled after many test results, and errors will occur when the charge capacity change rate of the battery voltage change is different from Table

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  • Apparatus and method for determining degradation of high-voltage vehicle battery
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  • Apparatus and method for determining degradation of high-voltage vehicle battery

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Embodiment Construction

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. The terms used in the present invention are only used to describe the embodiments, and not to limit the present invention. The singular form in this specification also includes the plural form unless otherwise indicated in the text. The use of "comprises" or "comprising" in the specification does not exclude the existence of more than one othe...

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Abstract

Provided are an apparatus and method for determining degradation of a high-voltage vehicle battery, and the apparatus for determining degradation of a high-voltage vehicle battery is configured to measure a battery state of health (SOH) according to a preset estimation calculation, thereby minimizing a battery degradation estimation error. According to the present invention, it is possible to calculate a capacity of a battery only using a current value and a state of charge (SOC) change value to estimate an SOH of the battery, thereby simplifying an algorithm for the estimation. In particular, it is also advantageously possible to estimate a battery SOH through a first estimation algorithm, compare the estimated battery SOH with a threshold value, determine whether to perform re-estimation, and if the re-estimation is determined, re-estimate the battery SOH through a second estimation algorithm, using a least mean square method, thereby minimizing an error in a battery SOH estimation value.

Description

technical field [0001] The invention relates to a degradation judging device and method for a high-voltage storage battery of a vehicle, in particular to a device and a method for estimating the degradation degree of a high-voltage storage battery of a vehicle. Background technique [0002] A general electric vehicle or a hybrid electric vehicle (hereinafter referred to as an electric vehicle) is a vehicle driven by electricity stored in a battery in electric mode. [0003] Electric vehicles use the energy charged on the battery to move, so it is very important to know the existing capacity of the battery. For this reason, the technology of notifying the driver of the driving distance after grasping the SOC (State of Charge) of the battery has been widely developed. [0004] As an example, the voltage of the battery can be measured during charging and discharging of the battery, the open circuit voltage of the battery in the no-load state can be estimated based on the measu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
CPCG01R31/367G01R31/3842G01R31/392Y02E60/10G01R31/12G01R31/36H01M10/48
Inventor 金泰权
Owner HYUNDAI MOBIS CO LTD