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48V system start-stop reliability test method

A test method and reliability technology, applied in the test field of 48V system start-stop reliability

Active Publication Date: 2021-03-23
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application of new technologies may bring problems to users. In order to reduce user complaints, the reliability of the 48V system is particularly important. At present, there is no fast, scientific and systematic verification method in the automotive industry.

Method used

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  • 48V system start-stop reliability test method
  • 48V system start-stop reliability test method

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Experimental program
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Embodiment Construction

[0031] The specific implementation manner of the present invention will be described in further detail below by describing the best embodiment with reference to the accompanying drawings.

[0032] figure 1 The flow chart of the test method for the start-stop reliability of the 48V system provided by the embodiment of the present invention, the method specifically includes the following:

[0033] S1. Carry out vehicle assembly of 48V system;

[0034] The 48V system is basically the same as the traditional vehicle system, the difference is that the 48V motor, 48V lithium battery, DC-DC, and 48V wiring harness are installed on the 48V system vehicle according to the actual vehicle installation posture.

[0035] S2. Put the whole vehicle with normal function into the environmental compartment, set the test parameters of the 48V start-stop reliability test of the ECU unit, set the DC regulated power supply to 48V and charge the 48V battery;

[0036] Test parameters include: the t...

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PUM

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Abstract

The invention relates to the technical field of engine testing, and provides a 48V system start-stop reliability test method which comprises the following steps: S1, assembling a whole 48V system; s2,putting the whole vehicle with normal functions into an environment bin, setting test parameters of a 48V start-stop reliability test of the ECU unit, setting a direct-current stabilized power supplyto 48V, and charging a 48V battery; s3, performing the 48V start-stop reliability test, performing start-stop detection on the engine after a single cycle is finished, and detecting whether the start-stop function of the engine is normal or not; and S4, if the start-stop detection of the engine is normal after all the cycles are finished, determining that the start-stop reliability of the 48V system is good. The method for testing the start-stop reliability of the 48V system is provided.

Description

technical field [0001] The invention relates to the technical field of engine testing and provides a testing method for the start-stop reliability of a 48V system. Background technique [0002] With the progress of society and the development of human civilization, countries are paying more and more attention to the requirements of vehicle exhaust emissions. Obviously, in the case of increasingly stringent emission requirements, it is impossible to achieve the emission target simply by improving the fuel efficiency of the engine. Vehicle hybridization and pure electrification are the future development trend. Due to the high cost and battery life, pure electrification cannot be popularized in a short period of time, and more and more applications of hybrid technology are being used. The 48V system is a mild hybrid system. Compared with the high-voltage hybrid system, the cost is lower, but it can achieve most of the energy-saving effects of the high-voltage hybrid system (b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/00G01R31/00
CPCG01M15/00G01R31/006
Inventor 张华春朱礼铭李建红马跃张晓军
Owner CHERY AUTOMOBILE CO LTD