[0034] In the following, embodiments of the present invention will be described below, and those skilled in the art can easily understand other advantages and efficacy of the present invention, apparently, as described in the present invention. , Not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art are in the range of the present invention without making creative labor premise.
[0035] See figure 1 and figure 2 , There is provided a multi-sensor thermal runaway detection lithium battery test system, comprising a main control module, the power module 2, the sensor module 3, the communication module 4 and 5 data analysis module: the main control module 1 and the power source establishing the connection between module 2, the sensor module 3 to establish the connection between the control module 1, establishing the connection between the communication module 4 and the master module 1, the data analysis module 5 the communication module establishes the connection between 4; wherein:
[0036] A control module, and data for controlling driving and sensor acquisition sensor;
[0037] Power module 2, a main control module for supplying power;
[0038]The sensor module 3, a control power supply for the sensor and level conversion;
[0039] 4 communications module, for collecting data of the sensor module of the control module 1 receives the upload 3;
[0040] 5 data analysis module, for storing the collected data is uploaded to the communication module 4, and an output processing;
[0041] 1 integrated in the main control module main control circuit board 6, the main control circuit board 6 is provided with an analog interface, the digital interface and power communication interface; the sensor module 3 to the integrated sensor circuit board 7, and the analog interface digital interfacing the sensor circuit board 7; the data analysis module is configured with the host computer 5;
[0042] The main control circuit board 6 different sensor interfaces digital interface level conversion; the main control circuit board 6 to supply the sensor circuit board 7; Test Conditions MCU main control circuit board 6 to complete the system initialization, the sensor module 3 in response to the output the sensor data, the sensor data acquisition control circuit board via MCU 6 and the post-processing interface to upload communication via the CAN to power the USB device, the USB device through the CAN to the sensor data is uploaded to the host PC side 8 saving the format of the original data to the PC terminal 8.
[0043] See Auxiliary figure 2 , An embodiment of a multi-sensor thermal runaway test systems detection of lithium in said analog interface comprises an analog input line and ACH + ACH-; IIC interface comprises a digital interface, UART interfaces, SPI and RS485. Main control circuit board analog interface and a digital interface connecting the sensor circuit board 6, 7, can be realized simultaneously eight analog signals from the sensor, the sensor IIC Rd, a UART interface to sensors, sensor SPI interface way, all the way to the test sensor RS485 interface. The interface control circuit board 6 different level conversion for digital sensor interfaces, to meet the requirements of MCU interface level control circuit board 6. After 7 and the main control circuit board 6 is connected to the sensor circuit board, control circuit board 6 to supply the sensor circuit board 7, under certain test conditions, the initialization of the MCU 6 to complete the system main control circuit board, the sensor outputs in response to test conditions data, after the data acquisition and processing MCU, the power supplied to the communication interface, CAN package uploaded to the USB device, the USB device through the CAN to the data finally uploaded to the PC 8 PC, the PC to save the original data format 8 .
[0044] See Auxiliary image 3 , An embodiment of a multi-sensor thermal runaway test systems detection of lithium in said data evaluation module 5 comprises normalizing, filtering, unified unit, charts and tables for processing the sensor data. After completion of data acquisition, data analysis module 5, may be of unitary sensor data, including normalization, filtering algorithm, unified unit, graphing, tables and so on. Analysis of the data processing is complete, the reaction may be a direct result output process of the indicators detected by the sensor thermal runaway, and a final conclusion can be intuitively selection sensor.
[0045] Specifically, the control circuit board 6 will MCU chip assigned to each sensor interface fixed uniform format identifier, in the main control circuit board 6 are connected to the sensor, the uploaded data contains an identifier of the sensor will be connected to the interface according to the identifier symbol to distinguish the data so that the data corresponding to the sensor.
[0046] Because if it is an analog sensor, the uploaded data is hexadecimal data after the control circuit board via the analog-digital converter 6, the end of data marker analog conversion will increase the specific data. If the uploaded digital sensor data, the data format by the impact sensor itself, may be binary, decimal or hexadecimal data.
[0047] Analog conversion of data, because it is the main control circuit board 6 via a unified conversion, can limit the normalized data set according to the door, to facilitate comparison of the data. If the data has significantly higher or lower than the threshold and exceeds the set maximum threshold value, the filtering process will eliminate the single measurement errors, the specific method is: the use of a front and a rear a normal data collection requirements and then the replacement data as the mean of this abnormal data.
[0048] Specifically, the data of the digital sensor, the main control circuit board 6 because without a unified analog to digital conversion, collection formats may be two, decimal, or hexadecimal data, the data can be converted to unified hexadecimal for final processing, if necessary filtering, and the principle of the method is determined as above.
[0049] Test systems for multi-sensor thermal runaway detection lithium battery according to one embodiment, the main circuit board 6 by the IO expansion, said expansion comprises a USB to serial IO, download and debug interface data printing interface; the USB 8 to serial for transmission of sensor data to the PC via a USB port terminal; debug level interface for downloading said control circuit board 6MCU driving debug; the data interface is used to print the test data collected in the form of a serial printer . IO expansion control circuit board 6 may further expand the system functions to achieve more sensors test requirements. USB to serial port can upload data to the PC through the USB port 8, a serial communication wizard software for data acquisition and the like. Print data can be collected by the test data in the form of a serial printer. These interfaces may further expand the functionality of the system to meet the needs of different acquisition methods, to further expand the use of the system. Download debug interface for the underlying driver debugging MCU. Power indicator indicating the system power is on, the status indication for indicating system status, such as error status indication, alarm display.
[0050] See Figure 4 The present invention also provides a multi-sensor thermal runaway lithium battery testing method for detecting, for a lithium battery using the above multi-sensor thermal runaway detection test system, comprising the steps of:
[0051] MCU 1 to the main control module assigned to each sensor interface fixed uniform format identifier, when the main control circuit board 6 is connected to the sensor module 3, the sensing data uploaded contains the identifier of a sensor connected to the interface according to the identifier sensor data to distinguish data;
[0052] Data processing algorithm Method 5 using the data analysis module type, the data processing algorithm selection processing the sensor data according to the type of sensor data is determined, the data processing algorithm comprises normalizing, filtering, unified unit change;
[0053] The sensing data processing table or patterning process, according to a user's preset output form the processing result display output.
[0054] Specifically, the main control circuit of the plate 6 after the end of the sensor 16 hexadecimal data after analog to digital conversion of the analog data conversion increase flag. Converting the analog data threshold set the data were normalized, the data filtering process when there is higher or lower than the set threshold and the data threshold; embodiment of the filtering process are: use of a pre and after a bit of normal data collection after the average sum as an alternative data of this abnormal data.
[0055] Specifically, the digital signals of the binary and decimal data acquisition unified sensing data is converted to hexadecimal. The digital signal data threshold setting data were normalized, the data filtering process when there is higher or lower than the set threshold and the data threshold; embodiment of the filtering process are: use of a pre and after a bit of normal data collection after the average sum as an alternative data of this abnormal data. The user preset output format and outputs the processing result display compared, the comparison include: comparison of the test results according to the type of sensor data; a data comparison of the test results according to the time dimension.
[0056] Based on the technical solution of the present invention, it can be combined with specific functional modules corresponding to the software development. A data processing example in the embodiment of the present invention is primarily the host computer is completed, the data collection terminal software, operational data analysis module 5, the host computer will be done automatically focus data, particularly data processing procedure is described as follows:
[0057] Because the data collection system by uploading impact sensors vary, the software first determines the type of data acquisition, data processing automatically select the appropriate method, the main data processing method including but not limited to normalization, filtering, and the like unified unit. The processed data is done automatically processing graphics and tables, to facilitate result output, the output form can be user defined. If desired, the data comparison function may be used to select different sets of data simultaneously generated graphics or tables, for comparison of test results of the different sensors. It also brings up the previous test results, comparative analysis of the output comparison results.
[0058] Build a complete system in the embodiment of the present invention may be adapted to a variety of lithium used pressure thermal runaway, the VOC, smoke, flame sensor testing needs, but also because highly integrated system, the test conditions can be performed with a variety of sensors together with the test, with maximum flexibility. Product development to facilitate selection test sensor, the sensor verification function, comparative experiments, the sensor signal can be used as similar to the test and data acquisition device.
[0059] System supporting the data acquisition and processing software can be uploaded to the control circuit board 6 for all real-time backup sensor test data, after the acquisition, the software can run data analysis module 5, the tests conducted on the data centralized processing, in accordance with software data requirements of different sensors, intelligent selection will be normalized, filtering algorithm, unified unit, graphing, and other forms of processing, the final output data of the processing result, the reaction can be tested directly comparison result of the sensor.
[0060] Practice of the invention have been successfully using confidential, and after functional verification invention results in line with expectations, and complete a variety of pressure testing VOC, smoke sensors, and achieved good results. Aspect of the present invention is highly versatile, can be adapted to various types of sensor interface, the sensor need to add new types of test, the voltage sensor need only implement the special needs for the development of a sensor corresponding to a circuit board, to facilitate soldering and sensors conversion; the present invention, data acquisition and processing using a unified manner, to achieve a unified operation data by the algorithm, can visually compare the final results for each sensor, the results of the previous test when necessary, the system brings up further, and this the results were analyzed, optimized for test process improvement recommendations; save development costs, compress product development cycle; convenient for simultaneous testing of multiple sensors unified data processing and analysis, the results of comparative more apparent.
[0061] Although the present invention has been described above with the general description and specific embodiments, the present invention has been described, and some modifications or modifications can be made to those skilled in the art, which will be apparent to those skilled in the art. Therefore, these modifications or improvements made on the basis of the spirit of the invention are the scope of the present invention.
