CN102081145A - Functional verification platform of battery management system - Google Patents

Abstract

The invention proposes a function verification platform of a battery management system, which can comprehensively detect whether the battery management system works normally and whether the functions are complete in an offline state. The present invention consists of the following four parts: 1. Special signal generation module; 2. Measurement and control system; 3. Human-computer interaction platform; 4. CAN transceiver module. The system involved in the present invention realizes the normal operation of the battery management system in an offline state and processes predetermined setting functions by generating a total voltage analog signal, a module voltage analog signal, a total current analog signal, a temperature analog signal and a handshake signal. Finally, the battery management system feeds back the task results to the functional verification platform through CAN communication. By comparing the output results of the battery management system at this time with the input instructions of the function verification platform, the hardware, driver software, and application software functions of the battery management system can be quickly verified.

Description

A functional verification platform for battery management system

technical field

The invention belongs to a function verification platform, in particular to a function verification platform of a battery management system.

Background technique

As the world's awareness of energy saving and environmental protection increases, the development trend of hybrid vehicles is growing. The power battery pack is a key component of a hybrid electric vehicle, which requires real-time monitoring by the battery management system. Whether the function of the battery management system meets the actual requirements must be verified, so as to detect the defects of the battery management system in time and avoid accidents during the operation of the whole vehicle. Therefore, in the research of hybrid electric vehicles, it is of great significance to design an economical and effective functional verification platform of battery management system.

In the existing patents, there are related descriptions of the battery management system function verification platform, such as the utility model name of the battery manager test platform patent (patent number ZL200720121933.1), in which the detection unit is input through the IO digital signal, The CAN network data input analysis unit and the CAN network command input analysis unit receive the detection data and command data and transmit them to the MCU control unit. After being processed by the MCU control unit, they are sent to the analog signal output unit and the CAN network information output unit for simulation. Various signals are sent to the battery management system to realize the functional verification of the management system. The name of the utility model is a patent for a detection device of a power battery pack management system (Patent No. ZL200520121096.3). In this patent, the total voltage and current control module, the single-cell voltage output control module, the single-cell temperature output control module, The processor control module, the input and output control module and the upper computer module are respectively connected with the processor control module to realize the function diagnosis of the power battery pack management system. In the above-mentioned patents, only some functions are simulated, and the precision and accuracy thereof are not evaluated. In addition, the verification platform proposed in the above patent has no human-computer interaction function.

Contents of the invention

The invention is a battery management system function verification platform designed for verifying whether the function of the battery management system satisfies the requirements, so as to achieve the purpose of quickly and effectively detecting the battery management system.

The function verification platform of the battery management system proposed by the present invention is composed of four parts: 1. a special signal generation module; 2. a measurement and control system; 3. a human-computer interaction platform; 4. a CAN transceiver module.

The special signal generation module is used to generate the total voltage analog signal and module voltage analog signal to be detected by the battery management system; the measurement and control system is used to generate the total current analog signal, temperature analog signal and handshake signal to be detected by the battery management system; The human-computer interaction platform is used to control the measurement and control system, and confirm whether the function of the battery management system is normal according to the comparison of input and output data; the CAN transceiver module is used to realize the mutual communication between the battery management system and the battery management system function verification platform .

The special signal generating module is connected with the measurement and control system, and its input is the control signal output by the measurement and control system. This control signal is a standard analog signal. When it is input to the special signal generating module, the controller inside the module receives the analog signal and performs A/D and D/A conversion on it, and then it is input to the special signal generating module. The total voltage and module voltage channel set inside the module, the channel outputs the total voltage analog signal and module voltage analog signal to be detected by the battery management system after AC/DC and DC/DC conversion, and the output voltage signal needs to be consistent with In practice, the output voltage of the battery pack is the same.

The measurement and control system is composed of communication equipment and corresponding A/D, D/A and other modules. Current analog signal, battery temperature analog signal and handshake signal, and at the same time control the special signal generation module to generate the total voltage analog signal and module voltage analog signal; the digital-to-analog conversion terminal is connected to the battery management system to receive the relay signal output by the battery management system and handshake signal.

The human-computer interaction platform is connected to the communication terminal of the measurement and control system. The human-computer interaction platform controls the measurement and control system to make it generate various signals that the battery management system needs to detect. At the same time, the human-computer interaction platform needs to display various data generated by the measurement and control system in real time, and perform accuracy verification and function verification on these data to judge the functionality of the battery management system. In addition, the human-computer interaction platform needs to save various signals detected by the battery management system, such as total voltage, total current, temperature, handshake signals, etc., so as to view historical records in the future.

The CAN transceiver module is connected between the battery management system and the human-computer interaction platform, and is a functional module to ensure effective and real-time communication between the battery management system and the battery management system function verification platform. The various data output by the battery management system are sent to the battery management system function verification platform through the CAN transceiver module in CAN communication mode, so that the function test platform can process various data in real time and quickly.

The battery management system function verification platform is connected to the battery management system through a connector, so that the battery management system can work normally in an offline state. The test platform has a simple structure and can quickly and effectively perform function verification on the battery management system, and the lower.

The method for verifying the function of the battery management system using the above-mentioned battery management system function verification platform, the steps are as follows:

First, the human-computer interaction platform issues control instructions to control the measurement and control system to output the total current analog signal, temperature analog signal, handshake and other signals to be detected by the battery management system; at the same time, the display part of the human-computer interaction platform displays the collected measurement and control system output in real time Signal, and save various data in the form of files for viewing;

Secondly, the measurement and control system receives the control instruction issued by the human-computer interaction platform. According to the control instruction, the measurement and control system outputs the total current analog signal, temperature analog signal, and handshake signal, and also outputs the total voltage analog signal and module voltage by controlling the special signal module. Analog signal; at the same time, the measurement and control system receives the relay signal and handshake signal output from the battery management system through the signal receiving module to detect whether the battery management system is working normally;

Finally, after the battery management system processes the various signals output by the function verification platform, the results obtained are sent to the human-computer interaction platform through CAN communication through the CAN transceiver module; the human-computer interaction platform compares the results given by the battery management system The results and the expected results obtained by the platform self-processing, verify whether the hardware, driver software, and application software functions of the battery management system are normal, and display the verification results.

Compared with the existing patents, the functional verification platform described in the present invention can fully realize the offline working mode of the battery management system. In the present invention, in addition to verifying the total voltage, total current, module voltage and temperature of the key functions, The relay control signal and the handshake signal are also simulated to verify their functions. Another advantage of the present invention is that a human-computer interaction platform is designed. This platform inputs the control quantity into the measurement and control system, and the battery management system outputs To collect, at this time, the human-computer interaction platform can read the data collected by the battery management system through CAN communication, and compare it with the sent control quantity, and check whether the collection accuracy and numerical calculation results of the battery management system are accurate.

Description of drawings

FIG. 1 is a block diagram of the overall structure of the battery management system function verification platform proposed by the present invention.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing.       

Figure 1 is a block diagram of the overall structure of the battery management system function verification platform. The battery management system function verification platform includes: a special signal generation module, used to generate the total voltage analog signal, module voltage analog signal; measurement and control system, used to generate the total current analog signal, temperature analog signal and handshake signals, and control the special signal The generation module; the human-computer interaction platform controls the measurement and control system and judges the functionality of the battery management system; the CAN transceiver module is used to realize the communication between the battery management system and the function verification platform. The special signal generation module is connected with the measurement and control system, the measurement and control system is composed of communication equipment and corresponding A/D, D/A and other modules, the communication terminal is connected with the human-computer interaction platform, and the human-computer interaction platform is connected with the measurement and control system communication terminal The CAN transceiver module is connected between the battery management system and the human-computer interaction platform, and the battery management system function verification platform is connected to the battery management system through a connector.

When the function verification platform is working, the changes of various data of the measurement and control system and the verification results of the battery management system can be displayed in real time through the interface of the human-computer interaction platform, and the function verification platform can be operated through the interface of the human-computer interaction platform to control the battery management system. The method of functional verification is as follows:

First, the human-computer interaction platform issues control commands to control the measurement and control system to output the total current analog signal, temperature analog signal, handshake and other signals to be detected by the battery management system. At the same time, the display part of the human-computer interaction platform displays the collected output signals of the measurement and control system in real time, and saves various data in the form of files for viewing.

Secondly, the measurement and control system receives the control instruction issued by the human-computer interaction platform. According to the control instruction, the measurement and control system outputs the total current analog signal, temperature analog signal, and handshake signal, and also outputs the total voltage analog signal and module voltage by controlling the special signal module. analog signal. At the same time, the measurement and control system receives the relay signal and handshake signal from the battery management system through the signal receiving module to detect whether the battery management system is working normally.

Finally, after the battery management system processes the various signals output by the function verification platform, the results are sent to the human-machine interaction platform through the CAN transceiver module through CAN communication. The human-computer interaction platform verifies whether the hardware, driver software, and application software functions of the battery management system are normal by comparing the results given by the battery management system with the expected results obtained by the platform's self-processing, and displays the verification results.

Claims (2)

1. battery management system functional verification platform, this functional verification platform can realize that battery management system gets operate as normal under the off-line state, and its function is verified, it is characterized in that:

This battery management system functional verification platform is made up of four parts: distinctive signal generation module, TT﹠C system, man-machine interactive platform, CAN transceiver module;

Described distinctive signal generation module is used to produce total voltage simulating signal, the module voltage simulating signal that battery management system will detect; Described distinctive signal generation module links to each other with TT﹠C system, it is input as the control signal of TT﹠C system output, this control signal is the simulating signal of a standard, after it is input to distinctive signal generation module, after the controller of inside modules receives this simulating signal and it is carried out the conversion of A/D and D/A, be input to total voltage and module voltage passage that distinctive signal generation inside modules is set, this passage is exported the total voltage simulating signal that battery management system will detect through AC/DC and DC/DC conversion back, the module voltage simulating signal, and its voltage signal of exporting needs consistent with electric battery output voltage under the actual conditions;

Described TT﹠C system is used to produce total current simulating signal, temperature analog signal and the handshake that battery management system will detect; Described TT﹠C system is to be set up and formed by communication facilities and corresponding A/D, D/A module, communication ends links to each other with man-machine interactive platform, the instruction of sending according to man-machine interactive platform, total current simulating signal, battery temperature simulating signal and the handshake of the required detection of output battery management system are controlled distinctive signal generation module simultaneously and are produced total voltage simulating signal, module voltage simulating signal; The digital-to-analog conversion end links to each other with battery management system, is used to receive the relay signal and the handshake of battery management system output;

Described man-machine interactive platform is used to control TT﹠C system, and contrast confirms whether the battery management system function is normal according to inputoutput data; Described man-machine interactive platform links to each other with the TT﹠C system communication ends, and man-machine interactive platform makes it produce the various signals of the required detection of battery management system by the control TT﹠C system; Simultaneously, man-machine interactive platform needs to show in real time every data that TT﹠C system produces, thereby and these data are carried out precision checking, functional verification etc. handle and judge the functional of battery management systems; In addition, man-machine interactive platform need be preserved the detected various signals of battery management system;

Described CAN transceiver module is used for realizing the intercommunication mutually between battery management system and the battery management system functional verification platform; Described CAN transceiver module is connected between battery management system and the man-machine interactive platform, be guarantee between battery management system and the battery management system functional verification platform can be effectively, the functional module that communicates in real time, every data of battery management system output are with the CAN communication mode, send to battery management system functional verification platform by the CAN transceiver module, so that the functional test platform is real-time, the every data of fast processing;

Described battery management system functional verification platform links to each other with battery management system by connector, and realizing can operate as normal under the battery management system off-line state.

2. the method for using the described battery management system functional verification of claim 1 platform to carry out the battery management system functional verification, its step is as follows:

At first, send steering order, total current simulating signal, the temperature analog signal that control TT﹠C system output battery management system will detect, signal such as shake hands by man-machine interactive platform; Simultaneously, the man-machine interactive platform display part shows the TT﹠C system output signal of being gathered in real time, and preserves every data so that check with the form of file;

Secondly, TT﹠C system receives the steering order that man-machine interactive platform sends, according to this steering order, outside TT﹠C system output total current simulating signal, temperature analog signal, the handshake, also, export total voltage simulating signal, module voltage simulating signal by control distinctive signal module; Simultaneously, TT﹠C system receives relay signal and handshake from battery management system output by signal receiving module, since whether detect battery management system working properly;

At last, after battery management system was handled every signal of functional verification platform output, the result who draws sent to man-machine interactive platform by the CAN transceiver module with the CAN communication mode; Man-machine interactive platform is handled the expected results that draws certainly by result and platform that the control cell management system provides, and whether hardware, drive software, the application software function of checking battery management system be normal, and shows the checking result.

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