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Communication protocol message structure and its application applied to eol automatic offline test

A protocol and message technology, which is applied in the field of EOL automated testing, can solve the problems of inconsistent test communication protocols, high labor cost, and long debugging cycle, so as to achieve the effect of improving versatility, improving efficiency, and shortening the debugging cycle

Active Publication Date: 2022-04-01
智新控制系统有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current EOL test system test communication protocol is not uniform. Although the test efficiency for a single component is high, as the number of later projects gradually increases, the test requirements need to be formulated separately after the project development is completed. The later debugging cycle becomes longer, and debugging problems are more serious Many, high labor input cost

Method used

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  • Communication protocol message structure and its application applied to eol automatic offline test
  • Communication protocol message structure and its application applied to eol automatic offline test

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The ID of the control message is 18FFFFFF (this ID is used for the convenience of the full-text control message). There are 6 high-side drivers in the controller. It is necessary to make the high-side 3 drive close to measure the output of this channel. The ID and content of the control request feedback message are :

[0022] 0x18FFFFFF 02 03 01 FF FF FF FF FF

[0023] Note: 02 represents the high-side drive function code, 03 represents the control of the third high-side drive, and 01 represents the control of the high-side output state as the on state;

[0024] If you need to turn on the diagnosis of the high side to test the diagnosis function during the test, you can define the diagnosis switch in the 4th byte, and the control request feedback message is:

[0025] 0x18FFFFFF 02 03 01 01 FF FF FF FF

[0026] Similarly, the following byte resources can enable other functions at the same time

Embodiment 2

[0028] It is necessary to calibrate the current gain of the controller, and the calibration data is 90000, so the pleading control message is:

[0029] 0x18FFFFFF 06 00 04 01 5F 90 00 FF

[0030] Among them, 06 represents the current test function, 00 represents the calibration gain, 04 represents the calibration length is 4 bytes, and 01 5F 9000 is the calibration data.

[0031] As shown in Table 2, the frame structure of the feedback message includes multiple byte columns distributed along the row direction. The multiple byte columns include at least one feedback function byte column and one functional test result byte column. The feedback function byte column It is the feedback function information corresponding to the control message one by one. The function test result byte column is the feedback function test result data (which can be information such as voltage, current, resistance or other status), and each feedback data according to the size of the feedback data Can ...

Embodiment 3

[0037] There are a total of 6 high-side drivers of the controller. It is necessary to close the high-side 3 drivers to measure the output voltage of this channel. Then the control request feedback message sending information is:

[0038] 0x18FFFFFF 02 03 01 FF FF FF FF FF

[0039] The feedback information of the feedback message is:

[0040] 0x18000000 02 00 00 00 00 00 00 00

[0041] 0x18111111 02 00 00 00 00 F6 2E 00

[0042] At this time, the representative feedback function code 02 indicates the feedback high-side drive function, and F6 2E is the output voltage value of the feedback high-side drive 6.

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Abstract

The invention relates to the technical field of EOL automatic testing, in particular to a communication protocol message structure and application thereof applied to EOL automatic offline testing. Communication protocol message structure includes control request frame structure and feedback message frame structure; control request frame structure includes test entry byte column, sub-function code / data calibration byte column and multiple state control / data calibration report The text byte column, the feedback message frame structure includes the feedback function byte column and the function test result byte column, the feedback function byte column is the feedback function information corresponding to the control message one by one, and the function test result byte column is the feedback Functional test result data. It can be commonly used for message feedback of different component tests, and the control requests and feedback messages of different function types and different sub-functions in the same function type can be clearly distinguished. There is no need to formulate test requirements separately, which reduces the complexity of message interaction. Shorten the product development and debugging cycle and improve efficiency.

Description

technical field [0001] The invention relates to the technical field of EOL automatic testing, in particular to a communication protocol message structure and application thereof applied to EOL automatic offline testing. Background technique [0002] The battery management system is the core and important component of electric vehicles. It controls the voltage, temperature, current, SOC, SOH and other parameters of the battery pack as a whole, and provides an important guarantee for the life of the entire battery pack. As the national policy favors new energy and the requirements for energy saving and environmental protection, there will be a large demand for new energy vehicles in the future, resulting in an increasing demand for battery management systems. The efficiency of traditional manual testing cannot meet the testing needs of large-scale shipments of battery management systems, making EOL The development of automated offline testing has become mainstream. EOL offline...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L69/06H04L69/08
CPCH04L69/06H04L69/08
Inventor 朱云龙刘振
Owner 智新控制系统有限公司
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