BMS device automatic detection system and method

Abstract

The invention relates to an automatic detection system for a BMS (Battery Management System) device. The automatic detection system comprises a detection control module and an upper computer, the detection control module is in communication connection with the upper computer and the detected BMS device. The detection control module sequentially generates corresponding detection item signals according to a preset detection sequence of detection items; the detected BMS device detects corresponding items according to the detection item signals to generate detection data; the detection control module receives the detection data and sends the data to the upper computer, and the upper computer judges whether the detection item is qualified or not according to the detection data and the detection standard; when the detection item is qualified, the detection is continued, and when the detection item is unqualified, the detection is interrupted. According to the invention, automatic control of BMS device detection is realized, the learning cost of workers is simplified, the production efficiency is improved, and the cost is saved.

Description

Technical Field

[0001] The present invention belongs to the technical field of BMS detection, and in particular, relates to a BMS device automatic detection system and method. Background Art

[0002] BMS (Battery Management Unit) is a key component of the energy storage battery system. With the rapid development of the electric vehicle industry, electric vehicles have higher and higher requirements for battery management systems. Therefore, there are many testing items in the production and manufacturing process of BMS products, which require the use of various instruments and equipment, resulting in high costs, long personnel training time, and long production cycles. Summary of the invention

[0003] To this end, the present invention provides a BMS device automatic detection system and method, which can realize automatic detection of multiple items of BMS, thereby solving the technical problems existing in the background technology.

[0004] A technical solution of the present invention is as follows: A BMS device automatic detection system comprises: a detection control module and a host computer; The detection control module is respectively connected to the host computer and the BMS device under test in communication; The detection control module generates corresponding detection item signals in sequence according to the detection order of the preset detection items; The BMS device under test performs detection of corresponding items according to the detection item signal to generate detection data; The detection control module receives the detection data and sends the data to the host computer, and the host computer determines whether the detection item is qualified according to the detection data and the detection standard; When the test item is qualified, a detection continuation signal is generated, and when the test item is unqualified, a detection interruption signal is generated; The detection control module generates a detection item signal corresponding to a next detection item according to the detection continuation instruction, and stops generating the detection item signal according to the detection interruption signal.

[0005] Furthermore, the detection items include: detecting the standby current of the BMS device, detecting the CAN wake-up and communication function, detecting the IO port wake-up, detecting the signal input and output function, detecting the high-side output function, detecting the high-voltage collection function, detecting the temperature collection function, detecting the insulation function, detecting the current collection function, and detecting the single battery voltage collection function.

[0006] Furthermore, the detection control module includes: a main control module, a CAN communication module, a serial communication module and a processing module. The main control module communicates with the BMS device under test through the CAN communication module, the main control module is connected to the host computer through the serial communication module, and the main control module is connected to the processing module. The processing module is connected to each functional pin of the BMS device under test, wherein the processing module applies a voltage to a corresponding pin of the BMS device under test and / or detects a current or voltage of the corresponding pin according to a detection item signal.

[0007] Further, when detecting the standby current of the BMS device, the main control module generates a detection item signal for detecting the standby current of the BMS device, and the processing module provides a working voltage to the BMS device under test and detects the standby current according to the detection item signal, thereby generating standby current detection data; The main control module sends the standby current detection data to a host computer, and the host computer determines whether the standby current of the BMS device is normal according to the standby current detection data and a detection standard.

[0008] Further, when detecting the high voltage acquisition function, the main control module generates a detection item signal for detecting the high voltage acquisition function; The processing module provides a working voltage to the BMS device under test and a DC high voltage to the positive and negative pins of the battery according to the detection item signal; The main control module receives the high-voltage collected data of the BMS device under test through the CAN communication module, and sends the high-voltage collected data to the host computer; The host computer determines whether the high-voltage collection function of the BMS device is normal according to the high-voltage collection data and the detection standard.

[0009] Furthermore, the main control module adopts MCU.

[0010] Furthermore, the processing module adopts a CKS32K148 microcontroller.

[0011] Another technical solution of the present invention is as follows: A BMS device automatic detection method, applied to any of the above-mentioned BMS device automatic detection systems, comprising: The detection control module generates corresponding detection item signals in sequence according to the preset detection order of the detection items.

[0012] The BMS device under test performs detection of corresponding items according to the detection item signal and generates detection data.

[0013] The detection control module receives the detection data and sends the data to the host computer, and the host computer determines whether the detection item is qualified according to the detection data and the detection standard.

[0014] When the detection item is qualified, a detection continuation signal is generated, and when the detection item is unqualified, a detection interruption signal is generated.

[0015] The detection control module generates a detection item signal corresponding to a next detection item according to the detection continuation instruction, and stops generating the detection item signal according to the detection interruption signal.

[0016] Beneficial effects of the present invention: The present invention realizes automatic control of BMS device detection through the detection control module, and sends the detection result to the host computer by connecting with the host computer, so as to judge whether the detection item is passed. The present invention has a simple connection method and simple operation, which simplifies the learning cost of the staff, improves production efficiency and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a system block diagram of the automatic detection system of the BMS device of the present invention.

[0018] Figure 2 It is a structural schematic diagram of the detection control module in the present invention.

[0019] Figure 3 It is a flow chart of the automatic detection method of the BMS device of the present invention.

[0020] Figure 4 It is a flow chart of standby current detection in the present invention.

[0021] Figure 5 It is a flow chart of the high voltage acquisition function detection in the present invention. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. The described embodiment is only a part of the embodiment of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention.

[0023] In one technical solution of the present invention, Figure 1 is a structural block diagram provided according to the specific structure of a BMS device automatic detection system of the present invention, such as Figure 1 As shown, the present invention comprises: a detection control module 2 and a host computer 1, wherein the detection control module 2 is respectively connected to the host computer 1 and the BMS device 5 to be tested for communication.

[0024] The detection control module 2 generates corresponding detection item signals in sequence according to the preset detection order of the detection items.

[0025] The BMS device 5 under test performs detection of corresponding items according to the detection item signal and generates detection data.

[0026] The detection control module 2 receives the detection data and sends the data to the host computer 1. The host computer 1 determines whether the detection item is qualified according to the detection data and the detection standard.

[0027] When the detection item is qualified, a detection continuation signal is generated, and when the detection item is unqualified, a detection interruption signal is generated.

[0028] The detection control module 2 generates a detection item signal corresponding to the next detection item according to the detection continuation instruction, and stops generating the detection item signal according to the detection interruption signal.

[0029] Generally, the detection items of the BMS device include: detecting the standby current of the BMS device, detecting the CAN wake-up and communication function, detecting the IO port wake-up, detecting the signal input and output function, detecting the high-side output function, detecting the high-voltage acquisition function, detecting the temperature acquisition function, detecting the insulation function, detecting the current acquisition function, and detecting the single battery voltage acquisition function.

[0030] Among them, Figure 2 As shown, the detection control module 2 includes: a main control module 21, a CAN communication module 23, a serial communication module 22 and a processing module 24. The main control module 21 communicates with the BMS device 5 under test through the CAN communication module 23, the main control module 21 is connected to the host computer 1 through the serial communication module 22, and the main control module 21 is connected to the processing module 24. The processing module 24 is connected to each functional pin of the BMS device 5 under test, wherein the processing module 24 applies a voltage to a corresponding pin of the BMS device 5 under test and / or detects a current or voltage of the corresponding pin according to a detection item signal.

[0031] The processing module 24 is connected to each functional pin of the BMS device 5 under test through corresponding connecting wires, wherein the functional pins include: positive and negative battery pins, temperature acquisition pins, relay high-side output pins, wake-up input pins, power supply pins, etc. When detecting the temperature acquisition function, an analog current is applied to the temperature acquisition pin to simulate the detection of the temperature sensor. At the same time, the temperature data detected by the BMS device is received by CAN communication, and the analog current is compared with the corresponding temperature to determine whether the temperature detection function of the BMS device 5 under test is normal.

[0032] The following are two specific detection embodiments: like Figure 4 As shown, when detecting the standby current of the BMS device, the main control module 21 generates a detection item signal for detecting the standby current of the BMS device, and the processing module 24 provides the working voltage 3 to the BMS device 5 under test and detects the standby current according to the detection item signal, thereby generating standby current detection data; The main control module 21 sends the standby current detection data to the host computer 1 , and the host computer 1 determines whether the standby current of the BMS device is normal according to the standby current detection data and the detection standard.

[0033] The specific process is as follows: S1: The computer sends a command to detect the standby current of the BMS product to the detection control module through the serial port.

[0034] S2: After the detection control module receives the command through the serial port, it controls the KL30 line to output 12V to the BMS product and detects the standby current on the KL30. The KL30 line is the connection line between the processing module and the BMS device under test.

[0035] S3: The detection control module transmits the standby current data to the computer through the serial port.

[0036] S4: After the computer receives the standby current data through the serial port, it compares it with the product standard (less than 1mA).

[0037] S5: The computer analyzes the comparison results. If the standards are met, the data is saved and the computer sends the next test command. If the standards are not met, the end command is sent to prompt the product to be reworked.

[0038] like Figure 5 As shown, when detecting the high voltage acquisition function, the main control module 21 generates a detection item signal for detecting the high voltage acquisition function.

[0039] The processing module 24 provides a working voltage 3 to the BMS device 5 under test and provides a DC high voltage 4 to the positive and negative pins of the battery according to the detection item signal.

[0040] The main control module 21 receives the high-voltage collected data of the tested BMS device 5 through the CAN communication module 23 , and sends the high-voltage collected data to the host computer 1 .

[0041] The host computer 1 determines whether the high voltage collection function of the BMS device is normal according to the high voltage collection data and the detection standard.

[0042] The details are as follows: S1: The computer sends the command for detecting the high voltage collection of the BMS product to the detection control module through the serial port.

[0043] S2: After the detection control module receives the command through the serial port, the detection control module controls the HV1, HV2, HV3, and PACK+ lines to output 400V to the BMS product.

[0044] S3: The detection control module transmits the high voltage collection command to the BMS product through the CAN harness.

[0045] S4: The detection control module reads the high-voltage data collected by the BMS product through the CAN harness, and then sends the high-voltage data to the computer through the serial port, controlling the HV1, HV2, HV3, and PACK+ lines to be suspended.

[0046] S5: After the computer receives the high-voltage acquisition data through the serial port, it compares it with the product standard (±1%).

[0047] S6: The computer analyzes the comparison results. If the standards are met, the data is saved and the computer sends the next test command. If the standards are not met, the end command is sent to prompt the product to be reworked.

[0048] It should be noted that the main control module 21 can be an MCU. The host computer 1 can be a computer equipped with corresponding detection software. The processing module 24 is a CKS32K148 microcontroller.

[0049] In another technical solution of the present invention, Figure 3 is a flowchart provided according to a specific process of an automatic detection invention of a BMS device of the present invention. The present invention is applied to any of the automatic detection systems of the BMS device described above, such as Figure 3 As shown, the present invention includes: The detection control module 2 generates corresponding detection item signals in sequence according to the preset detection order of the detection items.

[0050] The BMS device 5 under test performs detection of corresponding items according to the detection item signal and generates detection data.

[0051] The detection control module 2 receives the detection data and sends the data to the host computer 1. The host computer 1 determines whether the detection item is qualified according to the detection data and the detection standard.

[0052] When the detection item is qualified, a detection continuation signal is generated, and when the detection item is unqualified, a detection interruption signal is generated.

[0053] The detection control module 2 generates a detection item signal corresponding to the next detection item according to the detection continuation instruction, and stops generating the detection item signal according to the detection interruption signal.

[0054] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A BMS device automatic detection system, characterized in that: include: Detection control module and host computer; The detection control module is respectively connected to the host computer and the BMS device under test in communication; The detection control module generates corresponding detection item signals in sequence according to the detection order of the preset detection items; The BMS device under test performs detection of corresponding items according to the detection item signal to generate detection data; The detection control module receives the detection data and sends the data to the host computer, and the host computer determines whether the detection item is qualified according to the detection data and the detection standard; When the test item is qualified, a detection continuation signal is generated, and when the test item is unqualified, a detection interruption signal is generated; The detection control module generates a detection item signal corresponding to a next detection item according to the detection continuation instruction, and stops generating the detection item signal according to the detection interruption signal.

2. The automatic detection system for BMS device according to claim 1, characterized in that: The detection items include: detecting the standby current of the BMS device, detecting the CAN wake-up and communication function, detecting the IO port wake-up, detecting the signal input and output function, detecting the high-side output function, detecting the high-voltage collection function, detecting the temperature collection function, detecting the insulation function, detecting the current collection function, and detecting the single battery voltage collection function.

3. The BMS device automatic detection system according to claim 1, characterized in that: The detection control module includes: a main control module, a CAN communication module, a serial communication module and a processing module. The main control module communicates with the BMS device under test through the CAN communication module, the main control module is connected to the host computer through the serial communication module, and the main control module is connected to the processing module. The processing module is connected to each functional pin of the BMS device under test, wherein the processing module applies a voltage to a corresponding pin of the BMS device under test and / or detects a current or voltage of the corresponding pin according to a detection item signal.

4. The automatic detection system for BMS device according to claim 3, characterized in that: When detecting the standby current of the BMS device, the main control module generates a detection item signal for detecting the standby current of the BMS device, and the processing module provides a working voltage to the BMS device under test and detects the standby current according to the detection item signal, thereby generating standby current detection data; The main control module sends the standby current detection data to a host computer, and the host computer determines whether the standby current of the BMS device is normal according to the standby current detection data and a detection standard.

5. The BMS device automatic detection system according to claim 3, characterized in that: When detecting the high voltage acquisition function, the main control module generates a detection item signal for detecting the high voltage acquisition function; The processing module provides a working voltage to the BMS device under test and a DC high voltage to the positive and negative pins of the battery according to the detection item signal; The main control module receives the high-voltage collected data of the BMS device under test through the CAN communication module, and sends the high-voltage collected data to the host computer; The host computer determines whether the high-voltage collection function of the BMS device is normal according to the high-voltage collection data and the detection standard.

6. The BMS device automatic detection system according to claim 3, characterized in that: The main control module adopts MCU.

7. The BMS device automatic detection system according to claim 3, characterized in that: The processing module adopts CKS32K148 microcontroller.

8. A method for automatic detection of a BMS device, characterized in that: The automatic detection system for a BMS device used in any of claims 1 to 7 comprises: The detection control module generates corresponding detection item signals in sequence according to the detection order of the preset detection items; The BMS device under test performs detection of corresponding items according to the detection item signal to generate detection data; The detection control module receives the detection data and sends the data to the host computer, and the host computer determines whether the detection item is qualified according to the detection data and the detection standard; When the test item is qualified, a detection continuation signal is generated, and when the test item is unqualified, a detection interruption signal is generated; The detection control module generates a detection item signal corresponding to a next detection item according to the detection continuation instruction, and stops generating the detection item signal according to the detection interruption signal.

Images