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A test method for start-stop reliability of 48v system

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

Active Publication Date: 2021-12-28
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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  • A test method for start-stop reliability of 48v system
  • A test method for start-stop reliability of 48v system
  • A test method for start-stop reliability of 48v system

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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 present invention relates to the technical field of engine testing, and provides a method for testing the start-stop reliability of a 48V system, comprising the following steps: S1, assembling a complete vehicle with a 48V system; S2, putting a complete vehicle with normal functions into an environmental chamber, and setting 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; S3, carry out the 48V start-stop reliability test, and perform a The start-stop detection is to detect whether the start-stop function of the engine is normal; S4. If the start-stop detection of the engine is normal after all cycles are completed, it is determined that the 48V system has good start-stop reliability. The invention provides a set of test methods for the start-stop reliability of various 48V systems.

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 Patents(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