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

Power battery insulation detection method and related devices

A power battery and detection method technology, which is applied in the direction of measuring devices, high resistance measurement, and electrical measurement, can solve the problems of high-voltage safety hazards and the inability to accurately detect insulation detectors, and achieve the effect of improving high-voltage safety

Inactive Publication Date: 2021-03-09
HUNAN CSR TIMES ELECTRIC VEHICLE
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the insulation tester detects the insulation resistance of the high-voltage total positive and total negative of the power battery; however, the power battery is usually composed of multiple battery boxes connected in series and parallel. If the middle battery box of the power battery has an insulation failure, the insulation tester cannot Accurate detection, leading to high voltage safety hazards

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
  • Power battery insulation detection method and related devices
  • Power battery insulation detection method and related devices
  • Power battery insulation detection method and related devices

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0049] see figure 1 , is a parallel resistive insulation detection circuit. The parallel resistive insulation detection circuit also includes a first voltage sensor (not shown) for detecting the voltage across the resistor R0 connected to the first electronic switch S1, and a first voltage sensor (not shown) for detecting the voltage across the resistor R0 connected to the second electronic switch S2. A second voltage sensor (not shown) for the voltage across...

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 embodiment of the invention provides a power battery insulation detection method and device, a readable storage medium and a controller, and belongs to the technical field of electric vehicles, and the method comprises the steps: calculating the equivalent insulation resistance between the high-voltage total negative end of a power battery and the ground of a whole vehicle based on a parallelresistance type insulation detection circuit and the equivalent insulation resistance between the high-voltage main positive end of the power battery and the ground of the whole vehicle; calculating aparallel value of the two equivalent insulation resistances, and taking the parallel value as the insulation resistance between the power battery and the vehicle body to analyze whether the power battery has an insulation fault or not. Experimental verification shows that the power battery insulation detection method provided by the invention not only can detect insulation faults at two ends of the power battery, but also can detect insulation faults in the middle of the power battery, achieves inspection of insulation faults at any position of the power battery, and improves the high-voltagesafety of an electric vehicle.

Description

technical field [0001] The present invention relates to the technical field of electric vehicles, and more specifically, to a power battery insulation detection method, device, readable storage medium and controller. Background technique [0002] Electric vehicles use the power battery as the power source, and the insulation performance of the power battery and the body directly determines the safety of the vehicle. Therefore, the electric vehicle uses an insulation detector to detect the insulation resistance between the power battery and the body in real time to ensure the safety of the vehicle. High voltage safety. [0003] At present, the insulation tester detects the insulation resistance of the high-voltage total positive and total negative of the power battery; however, the power battery is usually composed of multiple battery boxes connected in series and parallel. If the middle battery box of the power battery has an insulation failure, the insulation tester cannot ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12G01R27/02G01R31/385
CPCG01R31/12G01R31/385G01R27/025
Inventor 龙宇舟黄河彭再武张楷翼卿鑫慧刘进程牛满岗
Owner HUNAN CSR TIMES ELECTRIC VEHICLE
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