A pulse cycle life test method for Ni-MH batteries for electric vehicles

A nickel-metal hydride battery, pulse cycle technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of unimproved electrolyte water electrolysis, low accuracy of test results, high cost investment, etc., and achieve short test cycle and improved Acceptability, the effect of reducing investment

Inactive Publication Date: 2019-07-16
CHENGDU RAJA NEW ENERGY AUTOMOTIVE TECH CO LTD
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a pulse cycle life test method for Ni-MH batteries for electric vehicles, which mainly solves the problems of low accuracy of test results, low efficiency, high cost input and no improvement in electrolysis in the existing battery life test methods for electric vehicles. Problems such as electrolysis of water in liquid

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
  • A pulse cycle life test method for Ni-MH batteries for electric vehicles
  • A pulse cycle life test method for Ni-MH batteries for electric vehicles
  • A pulse cycle life test method for Ni-MH batteries for electric vehicles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0057] The invention provides a pulse cycle life test method suitable for nickel-metal hydride batteries used in electric vehicles, which mainly adopts the method of multiple battery discharge and intermittent pulse charge and discharge, and simulates the premise that the battery runs in the actual working conditions of the electric vehicle Under the condition of frequent starting, accelerating, braking, and stopping charging and discharging process, and then test the life of its pulse cycle. Test procedure of the present invention can be shown by following table:

[0058]

[0059]

[0060]

[0061] Remark:

[0062] (1) When the capacity test result in step 87 is lower than the specified value, stop the cycle test.

[0063] (2) The SOC of the test method of the present invention is cycled between 20% and 80%.

[0064] The above working steps are 29~60, and it takes 65.76h to complete 100 times.

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 pulse cycle life testing method of a nickel-hydrogen battery for an electric vehicle, comprising: 1. discharging residual battery; 2. performing capacity test on the battery; 3. testing DC internal resistance; 4. discharging the battery Residual; 5. Cycle charge; 6. Cycle discharge; 7. Cycle charge; 1. Discharge the residual battery; 13. Conduct a capacity test on the battery; 14. Test the DC internal resistance; 15. Discharge the residual battery and complete the test. The invention is reasonable in design, rigorous in conception, and high in precision of test results, and effectively solves the problems of low test result precision, low efficiency, high cost investment, and no improvement in water electrolysis in the electrolyte in the existing electric vehicle battery pulse cycle life test method. problem, so it is suitable for popularization and application.

Description

technical field [0001] The invention relates to a test method, in particular to a pulse cycle life test method of a nickel-metal hydride battery for an electric vehicle. Background technique [0002] In the actual operation of electric vehicles, whether it is climbing acceleration, downhill braking, emergency braking, or frequent start and stop, high-temperature environment operation and other complex working conditions, pulse current will impact the battery instead of stable single constant current charging or discharge state. Therefore, it is necessary to conduct a pulse cycle life test on the Ni-MH battery of an electric vehicle in order to grasp its rechargeable discharge capacity and service life in time. [0003] However, the existing test methods are difficult to truly simulate the complex working conditions of electric vehicles in actual operation, so most of them are based on theoretical test methods, which have little reference value in practical applications. Th...

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 Patents(China)
IPC IPC(8): G01R31/378
CPCG01R31/392
Inventor 聂靖轩戴润义杜小勇陈柯宇
Owner CHENGDU RAJA NEW ENERGY AUTOMOTIVE TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap