Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for diagnosing unsafe failure forms of Pack system, and electronic equipment

A diagnostic method and unsafe technology, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve the problems of maintenance risks and difficulties, and the inability to obtain the unsafe failure form of the Pack system, so as to achieve high safety and reduce unsafe Failure form misdiagnosis rate, effect of avoiding fire

Active Publication Date: 2019-05-21
DONGGUAN POWERWISE TECH CO LTD
View PDF11 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, when a thermal runaway alarm occurs in the above method, the current non-safe failure mode of the Pack system cannot be obtained, which brings risks and difficulties to maintenance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for diagnosing unsafe failure forms of Pack system, and electronic equipment
  • Method for diagnosing unsafe failure forms of Pack system, and electronic equipment
  • Method for diagnosing unsafe failure forms of Pack system, and electronic equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

[0050] see figure 1 - image 3 As shown, the present invention discloses a method for diagnosing an unsafe failure mode of a Pack system. The Pack system includes a plurality of single batteries. The method for diagnosing an unsafe failure mode of the Pack system includes the following steps:

[0051] S1, calculating the probability of occurrence of multiple non-safety failure forms in the Pack system;

[0052] S2. Calculate the average value of the probability of occurrence of multiple non-safety failure modes to obtain the thermal runaway probability P of the Pack system;

[0053] S3, according to the formula Pre=∑ P＞A P calculates the estimated occurrence probability Pre of the thermal runaway occurrence probability P greater than th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for diagnosing unsafe failure forms of a Pack system. The method comprises the following steps: (1) calculating the occurrence probabilities of multiple unsafe failureforms in the Pack system; (2) calculating an average value of the occurrence probabilities of the multiple unsafe failure forms to obtain a thermal runaway occurrence probability P of the Pack system; (3) calculating an estimated occurrence probability Pre of which the thermal runaway occurrence probability P is greater than a constant A according to a formula Pr=sigmaA>P, and diagnosing an unsafe failure form of the Pack system according to the estimated occurrence probability Pre. The method for diagnosing the unsafe failure forms of the Pack system can quickly, effectively, safely and accurately diagnose the unsafe failure forms of the Pack system of an electric vehicle.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a method for diagnosing non-safe failure modes of a Pack system. Background technique [0002] At present, the method commonly used to judge the probability of thermal runaway of the Pack system in electric vehicles is to use corresponding detection devices for targeted detection, such as detecting the water loss and air leakage of the battery through gas sensors, and early warning through smoke detectors. For the fire and smoke of the battery, the expansion and contraction of the battery are detected by the displacement sensor. Although adding the above sensors for detection can detect battery failure in advance and give the failure level according to the failure mode, so as to improve the life of the power system and ensure the safety of property and life. However, due to the backward technology and process of some battery manufacturers on the market, the power batte...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01R31/3842G01R31/389G01R31/392
Inventor 郑庆飞罗明杰谢卿
Owner DONGGUAN POWERWISE TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com