A method, device and system for offline detection of a wireless communication BMS

Abstract

The application discloses a kind of methods, devices and systems suitable for offline detection of wireless communication BMS, the method comprises: using physical connection line to send and a plurality of electronic acquisition units of BMS first analog signal corresponding to a plurality of electronic acquisition units, to make a plurality of electronic acquisition units generate respective first address information;Addressing information is sent to a plurality of electronic acquisition units, after a plurality of electronic acquisition units respond to addressing information, wireless communication is established with a plurality of electronic acquisition units;Receive a plurality of battery information uploaded by a plurality of electronic acquisition units, and determine the electronic acquisition unit corresponding to each battery information to be measured according to the first address information of a plurality of electronic acquisition units respectively. Using the device of the embodiment of the application, the electronic acquisition unit establishes wireless communication with the detection device with unique first address information, which avoids the problem of unable to determine the position of the electronic acquisition unit and unable to distinguish the source of the battery information to be measured.

Description

Technical Field

[0001] This invention relates to the field of BMS testing technology, and in particular to a method, apparatus and system for detecting the offline status of wireless communication BMS. Background Technology

[0002] With the booming development of electric vehicles in the new energy field, the wiring harnesses used for communication in new energy vehicles are becoming increasingly numerous and complex, leading to a growing number of problems caused by wiring harness connection issues. A solution using wireless communication to connect multiple electronic control units (ECUs) is gaining popularity among new energy vehicle manufacturers, and the adoption of wireless communication solutions for the battery management system (BMS) in new energy vehicles is also increasingly favored by OEMs. However, unlike wired communication, where the physical address of each ECU is fixed and can be identified through the wiring harness, wireless communication test benches cannot accurately identify the ECU under test during production. This results in multiple connection methods between multiple test benches and multiple ECUs, making it impossible to pinpoint the location of the ECU under test or distinguish the specific ECU. This leads to wireless communication test failures or high error rates, directly reducing the pass rate and production efficiency of the wireless communication ECU tests. Summary of the Invention

[0003] This invention provides a method, apparatus, and system for detecting the decommissioning of a wireless communication BMS, in order to solve the technical problem that test data cannot correspond to the electronic acquisition unit when using wireless communication connection for production testing of battery management systems.

[0004] To address the aforementioned technical problems, embodiments of the present invention provide a method for detecting offline status of a wireless communication BMS, comprising:

[0005] First analog signals corresponding to each of the several electronic acquisition units are sent to the several electronic acquisition units respectively, so that the several electronic acquisition units generate their own first address information according to the first analog signals they receive.

[0006] After sending addressing information to the plurality of electronic acquisition units, wireless communication is established with the corresponding plurality of electronic acquisition units so that the plurality of electronic acquisition units upload the battery information to be tested with their respective first address information attached.

[0007] The system receives information about several batteries to be tested uploaded by several electronic acquisition units via wireless communication, and determines the electronic acquisition unit corresponding to each battery to be tested based on the first address information of each of the several electronic acquisition units.

[0008] This invention uses a hardware connection to send a corresponding first analog signal to the electronic acquisition unit. Different electronic acquisition units establish different first address information based on different first analog signals. This allows each electronic acquisition unit to establish wireless communication with the detection device using its own unique first address information, and to complete the test by sending the battery information under test through wireless communication. This avoids the crosstalk problem that occurs when the detection device detects multiple electronic acquisition units and cannot determine the location of the electronic acquisition units or distinguish the source of the battery information under test.

[0009] Furthermore, the step of sending a first analog signal corresponding to each of the plurality of electronic acquisition units specifically includes:

[0010] The test fixture is used to connect and fix the plurality of electronic acquisition units;

[0011] Different gears are set for different electronic acquisition units, and a corresponding first analog signal is sent to each electronic acquisition unit according to the different gears.

[0012] The present invention physically connects different electronic acquisition units through a test fixture, and sends different first analog signals to different electronic acquisition units through gear settings, thereby enabling the electronic acquisition units to establish their own first address information based on the first analog signals, thereby realizing the identification of the data source and the determination of the position of the electronic acquisition units during the detection data transmission process.

[0013] Furthermore, the setting of different levels for different electronic acquisition units is specifically as follows:

[0014] Adjust the value of the output pull-up resistor so that the pull-up resistor and the input pull-down resistor of each electronic acquisition unit are combined to form different levels.

[0015] This invention changes the first analog signal input to the electronic acquisition unit by combining the output pull-up resistor and the input pull-down resistor, thereby enabling different first analog signals to be input to different electronic acquisition units and establishing mutually distinguishable first address information.

[0016] Furthermore, the step of sending a corresponding first analog signal to each electronic acquisition unit according to the different gear levels specifically involves:

[0017] According to the different gear positions, the rated operating voltage is converted into several first analog signals with different voltage values;

[0018] According to the preset transmission sequence, the first analog signal at different levels is sent to the plurality of electronic acquisition units respectively.

[0019] This invention converts the working voltage by setting different gears to obtain a first analog signal of the synchronization voltage value.

[0020] Furthermore, the plurality of electronic acquisition units generate their respective first address information, specifically as follows:

[0021] The plurality of electronic acquisition units identify the voltage value of the first analog signal they receive, and establish first address information corresponding to the first analog signal they receive based on the voltage value they identify.

[0022] Further, after establishing the first address information corresponding to the respective received first analog signals, the process includes:

[0023] The electronic acquisition unit stores its own first address information;

[0024] When the first analog signal received by the electronic acquisition unit is 0V, the stored first address information is cleared.

[0025] In this invention, the electronic acquisition unit establishes different first address information based on the received first analog signal, thereby avoiding crosstalk when making wireless communication connections with the detection equipment or detection device.

[0026] Furthermore, while sending the first analog signal corresponding one-to-one with each of the plurality of electronic acquisition units, the process includes:

[0027] Receive a second analog signal from a test fixture or computer terminal, and identify the voltage value of the second analog signal;

[0028] Based on the voltage value of the second analog signal, a unique second address information is established so that the wireless operation commands sent to the plurality of electronic acquisition units include the second address information.

[0029] In this invention, while the electronic acquisition module is self-addressed, the detection device or equipment is also addressed according to the second analog signal, so as to distinguish its own second address information from the address information of other detection devices, thereby avoiding crosstalk problems that occur when multiple detection devices are used at the same time.

[0030] Further, after receiving the information of several batteries under test uploaded by the several electronic acquisition units via wireless communication, and determining the electronic acquisition unit corresponding to each piece of information of the battery under test according to the first address information of each of the several electronic acquisition units, the process includes:

[0031] The battery information to be tested includes: cell voltage information and cell temperature information;

[0032] Based on the actual operating parameters of the individual battery cells, the battery cell voltage information and battery cell temperature information are compared to determine whether the electronic acquisition unit corresponding to the battery information under test has malfunctioned, and the judgment result obtained through data comparison is uploaded to the production cloud MES system.

[0033] On the other hand, embodiments of the present invention also provide a device for detecting the offline status of a wireless communication BMS, comprising: an address establishment module, a communication establishment module, and a test data acquisition module;

[0034] The address establishment module is used to send a first analog signal corresponding to each of the several electronic acquisition units, so that the several electronic acquisition units can generate their own first address information according to the first analog signal they receive.

[0035] The communication establishment module is used to send addressing information to the plurality of electronic acquisition units and then establish wireless communication with the plurality of electronic acquisition units in response, so that the plurality of electronic acquisition units upload the battery information to be tested with their respective first address information attached.

[0036] The test data acquisition module is used to receive several battery information entries uploaded by the several electronic acquisition units via wireless communication, and to determine the electronic acquisition unit corresponding to each battery information entry based on the first address information of each of the several electronic acquisition units.

[0037] This invention uses a hardware connection to send a corresponding first analog signal to the electronic acquisition unit. Different electronic acquisition units establish different first address information based on different first analog signals. This allows each electronic acquisition unit to establish wireless communication with the detection device using its own unique first address information, and to complete the test by sending the battery information under test through wireless communication. This avoids the crosstalk problem that occurs when the detection device detects multiple electronic acquisition units and cannot determine the location of the electronic acquisition units or distinguish the source of the battery information under test.

[0038] On the other hand, embodiments of the present invention also provide a decommissioning detection system suitable for wireless communication BMS, including: decommissioning detection equipment and several electronic acquisition units;

[0039] The offline detection device is used to execute the offline detection method applicable to wireless communication BMS as described in any one of the embodiments of the present invention; the offline detection device includes a communication enabling module, which is used to send a first analog signal to the plurality of electronic acquisition units and receive the first address information uploaded by the plurality of electronic acquisition units;

[0040] The plurality of electronic acquisition units are used to generate first address information corresponding to the first analog signal received by each of the plurality of electronic acquisition units after receiving the first analog signal corresponding to each of the plurality of electronic acquisition units; and to establish a wireless communication connection with the offline testing equipment in response to the addressing information of the offline testing equipment; and to collect the battery information to be tested and upload the battery information to be tested to the offline testing equipment via wireless communication; the electronic acquisition unit includes an address detection module, which is used to identify the voltage of the first analog signal during the offline testing and generate first address information corresponding to the voltage value of the first analog signal.

[0041] This invention uses a hardware connection to send a corresponding first analog signal to the electronic acquisition unit. Different electronic acquisition units establish different first address information based on different first analog signals. This allows each electronic acquisition unit to establish wireless communication with the detection device using its own unique first address information, and to complete the test by sending the battery information under test through wireless communication. This avoids the crosstalk problem that occurs when the detection device detects multiple electronic acquisition units and cannot determine the location of the electronic acquisition units or distinguish the source of the battery information under test. Attached Figure Description

[0042] Figure 1 This is a flowchart illustrating an embodiment of the offline detection method for wireless communication BMS provided by the present invention.

[0043] Figure 2 This is a flowchart illustrating another embodiment of the offline detection method for wireless communication BMS provided by the present invention.

[0044] Figure 3 This is a flowchart illustrating another embodiment of the offline detection method for wireless communication BMS provided by the present invention.

[0045] Figure 4 This is a schematic diagram of one embodiment of the offline detection device for wireless communication BMS provided by the present invention.

[0046] Figure 5 A timing diagram of information transmission for an offline detection system suitable for wireless communication BMS provided by the present invention;

[0047] Figure 6A schematic diagram of one embodiment of the offline testing equipment provided by the present invention;

[0048] Figure 7 This is a schematic diagram of the structure of an embodiment of the electronic acquisition unit provided by the present invention. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] Example 1

[0051] Please refer to Figure 1 This is a flowchart illustrating an embodiment of the offline detection method for wireless communication BMS provided by the present invention, mainly including steps 101-103, as follows:

[0052] Step 101: Send a first analog signal corresponding to each of the several electronic acquisition units, so that the several electronic acquisition units generate their own first address information according to the first analog signal they receive.

[0053] In this embodiment, the plurality of first analog signals are several analog signals with different voltage values. After receiving the first analog signals with different voltage values, the plurality of electronic acquisition units generate their own first address information based on the first analog signals they received, thereby enabling different electronic acquisition units to have different first address information and distinguish them from each other.

[0054] In this embodiment, the electronic acquisition unit can be an acquisition module for acquiring battery information. The acquisition module is wirelessly connected to the BMS battery management system and completes the acquisition of the voltage and temperature of the individual battery cells.

[0055] In this embodiment, the wireless communication can use TI's CC2662R-Q1 wireless communication protocol.

[0056] In this embodiment, several electronic acquisition units can be connected to each other via wireless communication.

[0057] Step 102: After sending addressing information to the plurality of electronic acquisition units, establish wireless communication with the responding plurality of electronic acquisition units so that the plurality of electronic acquisition units upload the battery information to be tested with their respective first address information.

[0058] In this embodiment, after the offline detection device for wireless communication BMS establishes a connection with several electronic acquisition units through their respective wireless communication modules, the information exchange between them is conducted through an addressing method. The offline detection device sends a signal to the several electronic acquisition units, and only the electronic acquisition units with the corresponding first address information respond. The responding electronic acquisition units perform corresponding operations according to the signal sent by the offline detection device.

[0059] Step 103: Receive the information of several batteries to be tested uploaded by the several electronic acquisition units via wireless communication, and determine the electronic acquisition unit corresponding to each battery to be tested information according to the first address information of each of the several electronic acquisition units.

[0060] In this embodiment, the electronic acquisition unit collects relevant information about several individual cells within the battery under test, such as cell voltage and temperature. After acquiring the battery information, the electronic acquisition unit responds to the instruction from the offline testing device and uploads the battery information. The offline testing device can display the battery information on the touchscreen interaction module.

[0061] In this embodiment, each battery information under test contains a certain first address information. The offline detection device can identify the electronic acquisition unit corresponding to each battery information under test based on the different first address information.

[0062] Please refer to Figure 2 This is a flowchart illustrating another embodiment of the offline detection method for wireless communication BMS provided by the present invention, mainly including steps 201-203, as follows:

[0063] In this embodiment, step 101 specifically includes steps 201 to 203.

[0064] Step 201: Connect and fix the test fixture to the plurality of electronic acquisition units.

[0065] In this embodiment, the test fixture is an electronic test fixture, such as the ZF electric vehicle test system or ICT test fixture, which is used to test the functionality, lifespan, and performance of electronic devices on the vehicle, such as electronic acquisition units.

[0066] In this embodiment, the connection can be fixed by physical hardwire connection, connecting the communication enable module of the offline detection device to the address detection module of several electronic acquisition units, so that the offline detection device can send a first analog signal to the electronic acquisition units.

[0067] Step 202: Set different gears for different electronic acquisition units, and send the corresponding first analog signal to each electronic acquisition unit according to the different gears.

[0068] In this embodiment, setting different levels for different electronic acquisition units specifically involves adjusting the resistance value of the output pull-up resistor so that the pull-up resistor and the input pull-down resistor of each electronic acquisition unit are combined to form different levels.

[0069] In this embodiment, the output pull-up resistor is set in the communication enable module of the offline detection device, and the interval between each level of the output pull-up resistor is a first preset resistance value.

[0070] This invention changes the first analog signal input to the electronic acquisition unit by combining the output pull-up resistor and the input pull-down resistor, thereby enabling different first analog signals to be input to different electronic acquisition units and establishing mutually distinguishable first address information.

[0071] In this embodiment, sending a corresponding first analog signal to each electronic acquisition unit according to the different gears specifically involves: converting the rated operating voltage into several first analog signals with different voltage values ​​according to the different gears; and sending the first analog signals at different gears to the several electronic acquisition units according to a preset sending order.

[0072] This invention converts the working voltage by setting different gears to obtain a first analog signal of the synchronization voltage value.

[0073] In this embodiment, pull-up and pull-down resistors are used to convert the operating voltage value in a voltage divider manner, so that different electronic acquisition units receive first analog signals with different voltage values ​​at different levels, thereby enabling different electronic acquisition units to establish different first address information based on different first analog signals. For example, in the default state, the address detection module of the electronic acquisition unit under test is configured to detect the input analog signal, with the pull-down resistor to ground. The communication enable module of the wireless communication BMS offline detection device is configured to pull up the resistor to the power supply. The above operating voltage and resistor values ​​can be adjusted according to actual test requirements. For example, assuming the operating voltage is 5.0V, the input pull-down resistor of the address detection module of the wireless communication electronic acquisition unit under test is 10K, with a default configuration of 10 levels. The output pull-up resistor of the communication enable module of the offline detection device can be configured from 1K to 10K, with each 1K being an interval value. This ensures that 10 wireless communication battery management system offline detection devices can be used simultaneously, and each wireless communication battery management system offline detection device can simultaneously monitor and measure 10 connected electronic acquisition units.

[0074] The present invention physically connects different electronic acquisition units through a test fixture, and sends different first analog signals to different electronic acquisition units through gear settings, thereby enabling the electronic acquisition units to establish their own first address information based on the first analog signals, thereby realizing the identification of the data source and the determination of the position of the electronic acquisition units during the detection data transmission process.

[0075] In this embodiment, the plurality of electronic acquisition units generate their respective first address information, specifically including step 203.

[0076] Step 203: The plurality of electronic acquisition units identify the voltage value of the first analog signal they receive, and establish first address information corresponding to the first analog signal they receive based on the voltage value they identify.

[0077] In this embodiment, after establishing the first address information corresponding to the first analog signal received by each unit, the process includes: the electronic acquisition unit storing its own first address information; and clearing the stored first address information when the first analog signal received by the electronic acquisition unit is 0V. To facilitate the re-pairing of each electronic acquisition unit with the offline detection device during the next detection, the electronic acquisition unit deletes the stored first address information after receiving the 0V first analog signal.

[0078] In this embodiment, the first address information is a two-digit address information.

[0079] In this invention, the electronic acquisition unit establishes different first address information based on the received first analog signal, thereby avoiding crosstalk when making wireless communication connections with the detection equipment or detection device.

[0080] Please refer to Figure 3 This is a flowchart illustrating another embodiment of the offline detection method for wireless communication BMS provided by the present invention, mainly including steps 301-302, as follows:

[0081] Step 301: Receive a second analog signal from a test fixture or computer terminal and identify the voltage value of the second analog signal.

[0082] In this embodiment, the second analog signal is set by the tester as needed.

[0083] In this embodiment, the tester can send second analog signals with different voltage values ​​to different offline testing devices through the test fixture, so that different test fixtures can establish different second address information based on the different second analog signals.

[0084] Step 302: Based on the voltage value of the second analog signal, establish a unique second address information so that the wireless operation instructions sent to the plurality of electronic acquisition units include the second address information.

[0085] In this embodiment, different offline detection devices have different second address information, thereby enabling multiple offline detection devices to establish wireless communication connections with different electronic acquisition modules and avoiding crosstalk between different offline detection devices.

[0086] In this invention, while the electronic acquisition module is self-addressed, the detection device or equipment is also addressed according to the second analog signal, so as to distinguish its own second address information from the address information of other detection devices, thereby avoiding crosstalk problems that occur when multiple detection devices are used at the same time.

[0087] Further, after receiving the information of several batteries under test uploaded by the several electronic acquisition units via wireless communication, and determining the electronic acquisition unit corresponding to each piece of information of the battery under test according to the first address information of each of the several electronic acquisition units, the process includes:

[0088] The battery information to be tested includes: cell voltage information and cell temperature information;

[0089] Based on the actual operating parameters of the individual battery cells, the battery cell voltage information and battery cell temperature information are compared to determine whether the electronic acquisition unit corresponding to the battery information under test has malfunctioned, and the judgment result obtained through data comparison is uploaded to the production cloud MES system.

[0090] In this embodiment, the offline testing device, in addition to collecting the battery information uploaded by the electronic acquisition unit, also compares the collected individual cell information with the current cell voltage and temperature information; wherein, the current cell voltage and temperature information come from the wireless BMS. When the error result of the data comparison is greater than a first preset value, it indicates that a certain electronic acquisition unit has malfunctioned; the judgment result is transmitted to the cloud-based MES system for management through the GPRS module of the offline testing device.

[0091] Please refer to Figure 4 This is a schematic diagram of an embodiment of the offline detection device for wireless communication BMS provided by the present invention, which mainly includes an address establishment module 401, a communication establishment module 402 and a test data acquisition module 403.

[0092] In this embodiment, the address establishment module 401 is used to send a first analog signal corresponding to each of the plurality of electronic acquisition units, so that the plurality of electronic acquisition units generate their own first address information according to the first analog signal they receive.

[0093] In this embodiment, the address establishment module 401 includes: a hard-wire connection unit, a gear setting unit, and an address establishment unit; wherein, the hard-wire connection unit is used to connect and fix with the plurality of electronic acquisition units using a test fixture; the gear setting unit is used to set different gears for different electronic acquisition units, and send a corresponding first analog signal to each electronic acquisition unit according to the different gears; the address establishment unit is used to enable the plurality of electronic acquisition units to identify the voltage value of the first analog signal they receive, and establish first address information corresponding to the first analog signal they receive according to the voltage value they identify.

[0094] In this embodiment, the following modules are executed simultaneously with the address establishment module 401: a signal setting module and a detection device address establishment module; wherein, the signal setting module is used to receive a second analog signal from a test fixture or computer terminal and identify the voltage value of the second analog signal; the detection device address establishment module is used to establish a unique second address information based on the voltage value of the second analog signal, so that the wireless operation instructions sent to the plurality of electronic acquisition units include the second address information.

[0095] The communication establishment module 402 is used to send addressing information to the plurality of electronic acquisition units and then establish wireless communication with the plurality of electronic acquisition units in response, so that the plurality of electronic acquisition units upload the battery information to be tested with their respective first address information attached.

[0096] The test data acquisition module 403 is used to receive several pieces of battery information uploaded by the several electronic acquisition units via wireless communication, and to determine the electronic acquisition unit corresponding to each piece of battery information based on the first address information of each of the several electronic acquisition units.

[0097] In this embodiment, after the test data acquisition module 403, a data comparison module is also included; wherein, the battery information to be tested includes: cell voltage information and cell temperature information; the data comparison module is used to compare the cell voltage information and cell temperature information according to the actual operating parameters of the individual cell, determine whether the electronic acquisition unit corresponding to the battery information to be tested is abnormal, and upload the judgment result obtained through data comparison to the production cloud MES system.

[0098] Please refer to Figure 5This is a timing diagram of information transmission for an offline detection system for a wireless communication BMS provided by the present invention. The offline detection system for a wireless communication BMS includes: an offline detection device and several electronic acquisition units.

[0099] In this embodiment, the offline detection device is used to perform the offline detection method applicable to a wireless communication BMS as described in any one of the embodiments of the present invention. Please refer to... Figure 6 The diagram below shows a structural schematic of an embodiment of the offline detection device provided by the present invention. The offline detection device includes a communication enabling module, which is used to send a first analog signal to the plurality of electronic acquisition units and receive first address information uploaded by the plurality of electronic acquisition units.

[0100] In this embodiment, the offline testing device further includes: a central processing module, a wireless communication module, a system power supply module, a GPRS communication module, and a touch screen interaction module; wherein, the central processing module establishes bidirectional communication with the communication enable module, the wireless communication module, the GPRS communication module, and the touch screen interaction module respectively; the system power supply module is used to distribute and manage the power supply of all modules of the offline testing device; the wireless communication module is used to establish wireless communication with the wireless communication chip of the electronic acquisition unit; the GPRS communication module is responsible for connecting to the cloud-based MES system of the production department to ensure the accurate transmission of test data; the touch screen interaction module is used for inputting and displaying production test instructions, and for displaying the battery information uploaded by the electronic acquisition unit, thereby completing tasks such as: test task start, test task end, parameter configuration, and information display; the central processing module is used for mutual scheduling between the various modules.

[0101] Several electronic acquisition units are used to generate their respective first address information after receiving several first analog signals corresponding one-to-one with the several electronic acquisition units; and to establish a wireless communication connection with the offline testing device in response to the addressing information of the offline testing device; and to collect information about the battery under test and upload the information about the battery under test to the offline testing device via wireless communication. Please refer to... Figure 7 The diagram below shows a structural schematic of an embodiment of the electronic acquisition unit provided by the present invention. The electronic acquisition unit includes an address detection module, which is used to identify the voltage of a first analog signal during production line testing and generate first address information corresponding to the voltage value of the first analog signal.

[0102] In this embodiment, the electronic acquisition unit further includes: a front-end acquisition chip, a power supply chip, a communication conversion chip, and a wireless communication chip; the front-end acquisition chip is used to acquire the cell voltage and cell temperature in the battery management system; the power supply chip is used to supply power to the communication conversion chip and the front-end acquisition chip; the wireless communication chip is used to establish wireless communication with the wireless communication unit of the offline detection device; and the communication conversion chip is used for interconnection between multiple electronic acquisition units.

[0103] This invention uses a hardware connection to send a corresponding first analog signal to the electronic acquisition unit. Different electronic acquisition units establish different first address information based on different first analog signals. This allows each electronic acquisition unit to establish wireless communication with the detection device using its own unique first address information, and to complete the test by sending the battery information under test through wireless communication. This avoids the crosstalk problem that occurs when the detection device detects multiple electronic acquisition units and cannot determine the location of the electronic acquisition units or distinguish the source of the battery information under test.

[0104] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention for those skilled in the art.

Claims

1. A method for detecting offline status of a wireless communication BMS, characterized in that, include: Each of the several electronic acquisition units receives a first analog signal corresponding to one of the several electronic acquisition units, and the several first analog signals are analog signals with different voltage values; so that the several electronic acquisition units generate their own first address information based on the first analog signals they receive. After sending addressing information to the plurality of electronic acquisition units, wireless communication is established with the corresponding plurality of electronic acquisition units so that the plurality of electronic acquisition units upload the battery information to be tested with their respective first address information attached. The system receives information about several batteries to be tested uploaded by several electronic acquisition units via wireless communication, and determines the electronic acquisition unit corresponding to each battery to be tested based on the first address information of each of the several electronic acquisition units. The step of sending a first analog signal corresponding to each of the plurality of electronic acquisition units specifically involves: The test fixture is used to connect and fix the plurality of electronic acquisition units; Different gear levels are set for different electronic acquisition units, and a corresponding first analog signal is sent to each electronic acquisition unit according to the different gear levels; The plurality of electronic acquisition units generate their respective first address information, specifically as follows: The plurality of electronic acquisition units identify the voltage value of the first analog signal they receive, and establish first address information corresponding to the first analog signal they receive based on the voltage value they identify. The electronic acquisition unit stores its own first address information; When the first analog signal received by the electronic acquisition unit is 0V, the stored first address information is cleared.

2. The offline detection method for wireless communication BMS as described in claim 1, characterized in that, The different settings are configured for different electronic acquisition units, specifically: Adjust the value of the output pull-up resistor so that the pull-up resistor and the input pull-down resistor of each electronic acquisition unit are combined to form different levels.

3. The offline detection method for wireless communication BMS as described in claim 1, characterized in that, The step of sending a corresponding first analog signal to each electronic acquisition unit according to the different gear levels is specifically as follows: According to the different gear positions, the rated operating voltage is converted into several first analog signals with different voltage values; According to the preset transmission sequence, the first analog signal at different levels is sent to the plurality of electronic acquisition units respectively.

4. The offline detection method for wireless communication BMS as described in any one of claims 1-3, characterized in that, Simultaneously with sending the first analog signal corresponding to each of the plurality of electronic acquisition units, the process includes: Receive a second analog signal from a test fixture or computer terminal, and identify the voltage value of the second analog signal; Based on the voltage value of the second analog signal, a unique second address information is established so that the wireless operation commands sent to the plurality of electronic acquisition units include the second address information.

5. The offline detection method for wireless communication BMS as described in any one of claims 1-3, characterized in that, After receiving the information of several batteries under test uploaded by the plurality of electronic acquisition units via wireless communication, and determining the electronic acquisition unit corresponding to each information of batteries under test based on the first address information of each of the plurality of electronic acquisition units, include: The battery information to be tested includes: cell voltage information and cell temperature information; Based on the actual operating parameters of the individual battery cells, the battery cell voltage information and battery cell temperature information are compared to determine whether the electronic acquisition unit corresponding to the battery information under test has malfunctioned, and the judgment result obtained through data comparison is uploaded to the production cloud MES system.

6. A device for detecting the offline status of a wireless communication BMS, characterized in that, include: Address establishment module, communication establishment module, and test data acquisition module; The address establishment module is used to send a first analog signal corresponding to each of the several electronic acquisition units, wherein the several first analog signals are analog signals with different voltage values, so that the several electronic acquisition units generate their own first address information based on the first analog signal they receive. The communication establishment module is used to send addressing information to the plurality of electronic acquisition units and then establish wireless communication with the plurality of electronic acquisition units in response, so that the plurality of electronic acquisition units upload the battery information to be tested with their respective first address information attached. The test data acquisition module is used to receive several battery information under test uploaded by several electronic acquisition units via wireless communication, and to determine the electronic acquisition unit corresponding to each battery information under test according to the first address information of each of the several electronic acquisition units. The address establishment module includes: a hard-wired connection unit and a gear setting unit; wherein, the hard-wired connection unit is used to connect and fix with the plurality of electronic acquisition units using a test fixture; the gear setting unit is used to set different gears for different electronic acquisition units, and send a corresponding first analog signal to each electronic acquisition unit according to the different gears; The address establishment module is also used for: The plurality of electronic acquisition units identify the voltage value of the first analog signal they receive, and establish first address information corresponding to the first analog signal they receive based on the voltage value they identify. The electronic acquisition unit stores its own first address information; When the first analog signal received by the electronic acquisition unit is 0V, the stored first address information is cleared.

7. A system for detecting the offline status of a wireless communication BMS, characterized in that, include: Offline testing equipment and several electronic data acquisition units; The offline detection device is used to execute the offline detection method applicable to wireless communication BMS as described in any one of claims 1-3; the offline detection device includes a communication enabling module, which is used to send a first analog signal to the plurality of electronic acquisition units and receive the first address information uploaded by the plurality of electronic acquisition units. The plurality of electronic acquisition units are used to generate first address information corresponding to the first analog signal received by each of the plurality of electronic acquisition units after receiving the first analog signal corresponding to each of the plurality of electronic acquisition units. The electronic acquisition unit includes an address detection module, which is used to respond to the addressing information of the offline testing device and establish a wireless communication connection with the offline testing device; and to collect information of the battery under test and upload the information of the battery under test to the offline testing device via wireless communication; the electronic acquisition unit includes an address detection module, which is used to identify the voltage of the first analog signal during the offline testing and generate first address information corresponding to the voltage value of the first analog signal.

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