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System, method, and program for predicting state of battery

A battery and program technology, applied in the field of state systems, can solve problems such as updating models and forecasting

Active Publication Date: 2013-04-17
INT BUSINESS MASCH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] However, it is impossible to predict various degraded environments with existing technologies, and it is difficult to use the use history in various degraded environments to update the model

Method used

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  • System, method, and program for predicting state of battery
  • System, method, and program for predicting state of battery
  • System, method, and program for predicting state of battery

Examples

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Embodiment Construction

[0051] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Especially if not expressly specified, like reference numerals, throughout the drawings, refer to like objects. In addition, the following description is one embodiment of this invention, and it is not intended to limit this invention with the content demonstrated by this Example.

[0052] figure 1It is a schematic diagram showing the overall configuration of an example for implementing the present invention. The server 102 collects information from a plurality of automobiles 106 and 108 via a packet communication network 104 to form a so-called probe vehicle communication system. figure 1 Only 2 vehicles are shown in the example, but there are actually a large number of vehicles to complete the task of detecting vehicles. Here, the vehicles 106 and 108 are electric vehicles (EV) or electric vehicles (HEV) equipped with batteries as secondary batteries for driving. Th...

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Abstract

A method and system for predicting degradation of a battery. Modeling of a battery is made to be separated into an aging section and a current-carrying section. The modeling is established such that the amount of degradation of a capacity retention ratio is determined by the linear sum of stay at each temperature and each SOC. The separation into degradation components at each temperature and each SOC enables predicting degradation under various degradation environments. A model for a battery separated into an aging section and a current-carrying section and a calculation model of a root law are combined into an objective function, and a table of discharge coefficients ah(T,S) and a table of current-carrying coefficients ac(T,S) are generated using a solver, where T indicates the temperature and S indicates SOC. Once tables are generated, degradation of the battery can be predicted by calculation using the tables.

Description

technical field [0001] The present invention relates to a system, method, and program for estimating the state of a secondary battery used in various electronic devices, electric devices, and the like. Background technique [0002] In recent years, due to concerns about global warming and the depletion of oil resources, a shift to a low-carbon society is expected. As part of this activity, the power exchange using secondary batteries in the power network, the peak shift using secondary batteries in factories, and the change of powertrains from internal combustion engines using petroleum energy to electric motors using electric energy, etc. The importance of secondary batteries in the industrial field is increasing. [0003] In addition, secondary batteries have problems of repeated charging and discharging, and a gradual decrease in charging rate. In an automobile using a secondary battery as a driving source, performance degradation of the secondary battery is associated ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
CPCG01R31/367G01R31/392G01R31/371
Inventor 高桥俊博天野正己恐神贵行井手刚
Owner INT BUSINESS MASCH CORP
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