Method and system for detecting resistance of internal short circuit of battery

A technology of short-circuit impedance and detection method, applied in short-circuit testing, circuits, secondary batteries, etc., can solve problems such as battery burning and fire, manufacturer's loss, and user's use danger.

Active Publication Date: 2019-06-14
IND TECH RES INST
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  • Abstract
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Problems solved by technology

A short circuit inside the battery may cause the battery to burn and catch fire, putting users in danger of use and causing huge losses to the manufacturer

Method used

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  • Method and system for detecting resistance of internal short circuit of battery
  • Method and system for detecting resistance of internal short circuit of battery
  • Method and system for detecting resistance of internal short circuit of battery

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Embodiment Construction

[0115] The technical terms in this specification refer to the habitual terms in the technical field. If this specification describes or defines some terms, the explanation of this part of the terms is subject to the description or definition in this specification. Each embodiment of the present disclosure has one or more technical features. Under the premise of possible implementation, those skilled in the art can selectively implement some or all of the technical features in any embodiment, or selectively combine some or all of the technical features in these embodiments.

[0116] Figure 1A A schematic diagram of a battery short-circuit impedance detection system 100 according to an embodiment of the present invention is shown. In this embodiment, the battery internal short circuit impedance detection system 100 is suitable for detecting the internal short circuit (ISC) impedance of a battery. In this embodiment, the battery internal short-circuit impedance detection system 100...

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Abstract

A method and a system for detecting resistance of an internal short circuit of a battery are provided. The method includes the following steps: measuring charging / discharging information of the battery; calculating a charging / discharging characteristic of the battery according to the charging / discharging information; aligning the charging / discharging characteristic of the battery according to a comparison characteristic point of a comparison characteristic to obtain an aligned charging / discharging characteristic; determining whether the battery is normal according to the aligned charging / discharging characteristic or a coulombic efficiency of the battery; and when the battery is determined as abnormal, calculating aligned charging / discharging information according to the aligned charging / discharging characteristic, and calculating the resistance of the internal short circuit of the battery according to the aligned charging / discharging information.

Description

Technical field [0001] The invention relates to a method and system for detecting short circuit impedance in a battery. Background technique [0002] With the rapid development of technology, more and more electronic devices, power storage systems and electric vehicles are equipped with batteries. A short circuit in the battery may cause the battery to burn and ignite, put users in danger of use, and cause huge losses to the manufacturer. How to judge whether the battery is abnormal and detect the internal short-circuit impedance of the battery is one of the problems to be solved at present. Summary of the invention [0003] The invention relates to a method and system for detecting short-circuit impedance in a battery. [0004] According to the first aspect of the present invention, a method for detecting short-circuit impedance in a battery is provided, which includes the following steps. Measure a charge and discharge information of a battery. A charge and discharge character...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/389H01M10/48
CPCG01R31/389G01R31/52G01R31/3842G01R31/367
Inventor 凌守弘梁世豪阙志克谢登存黄茂政
Owner IND TECH RES INST
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