Line-off detection method, apparatus, and system applicable to wireless communication BMS.

Abstract

The present invention discloses a line-off detection method, apparatus, and system applicable to a wireless communication BMS, the method comprising: employing a physical connection circuit to transmit a first analog signal corresponding one-to-one with a plurality of electronic information acquisition units of the BMS, so that the plurality of electronic information acquisition units generate their respective first address information; transmitting addressing information to the plurality of electronic information acquisition units, establishing wireless communication with the plurality of electronic information acquisition units after the plurality of electronic information acquisition units respond to the addressing information; receiving a plurality of battery information under test uploaded by the plurality of electronic information acquisition units, and determining the electronic information acquisition unit corresponding to each battery information under test based on the respective first address information of the plurality of electronic information acquisition units. By employing the apparatus of the embodiment of the present invention, the electronic information acquisition unit establishes wireless communication with the detection device using its own first address information, avoiding interference problems where the location of the electronic information acquisition unit cannot be determined and the source of the battery information under test cannot be identified.

Description

Technical Field

[0001] The present invention relates to the field of BMS testing technology, and particularly to a line-off detection method, apparatus, and system applicable to wireless communication BMS.

Background Art

[0002] With the booming development of electric vehicles in the new energy field, the communication harnesses in new energy vehicles are becoming more and more numerous and complex, and the problems caused by harness connection problems are also increasing. The scheme of adopting wireless communication connection between multiple electronic control units is favored by more and more new energy vehicle manufacturers, and adopting a wireless communication scheme as the battery management system in new energy vehicles is also recommended by more and more vehicle manufacturers. If the battery management system adopts a wireless communication method, unlike the wired communication method, that is, the physical addresses between each electronic control unit are no longer fixed, and it is impossible to identify each electronic control unit through the harness. During production line-off, when measuring and monitoring multiple electronic control units simultaneously at one time, the wireless communication test track cannot identify the currently measured wireless communication electronic control unit, and it is impossible to accurately establish the only connection between the wireless communication test track and the measured wireless communication electronic control unit. As a result, there are various connection methods between multiple wireless communication test tracks and multiple wireless communication electronic control units, and it is impossible to specify the position of the wireless communication electronic control unit currently under test, and it is impossible to identify a specific wireless communication electronic control unit, resulting in a high failure or error rate of the wireless communication test, directly reducing the line-off detection qualification rate and production efficiency of the wireless communication electronic control unit.

Summary of the Invention

Problems to be Solved by the Invention

[0003] This invention provides a line-off detection (EOL inspection) method, apparatus, and system applicable to wireless communication BMS, solving the technical problem that test data cannot correspond to electronic information acquisition units when performing production tests of battery management systems using existing wireless communication connection methods. [Means for solving the problem]

[0004] To solve the aforementioned technical problems, embodiments of the present invention provide a line-off detection method applicable to wireless communication BMS. Transmit a first analog signal to each of the multiple electronic information acquisition units, each corresponding to one of the multiple electronic information acquisition units, and have each of the multiple electronic information acquisition units generate its own first address information based on the first analog signal it receives. The process involves transmitting addressing information to the aforementioned multiple electronic information acquisition units, establishing wireless communication with the multiple electronic information acquisition units that respond to the addressing information, and having the multiple electronic information acquisition units upload the battery information to be measured with their respective first address information added. The system includes receiving multiple battery information under test uploaded by the multiple electronic information acquisition units via wireless communication, and determining the electronic information acquisition unit corresponding to each battery information under test based on the first address information of each of the multiple electronic information acquisition units.

[0005] This invention employs a hardware connection method to transmit a first analog signal corresponding to an electronic information acquisition unit, and different electronic information acquisition units establish different first address information based on different first analog signals. As a result, each electronic information acquisition unit establishes wireless communication with the detection device using its own unique first address information, transmits the battery under test information via wireless communication to complete the test, and avoids interference problems such as the inability of the detection device to determine the location of an electronic information acquisition unit or identify the source of the battery under test information when detecting multiple electronic information acquisition units.

[0006] Furthermore, transmitting a first analog signal that corresponds one-to-one with each of the multiple electronic information acquisition units to each of the multiple electronic information acquisition units specifically means, The test fixture is used to connect and fix the multiple electronic information acquisition units, This involves setting different ranges for different electronic information acquisition units and transmitting a first analog signal corresponding to each electronic information acquisition unit based on the range corresponding to each unit.

[0007] This invention enables the physical connection between different electronic information acquisition units to be fixed using a test jig, and the transmission of different first analog signals to different electronic information acquisition units by range setting. Furthermore, the electronic information acquisition units establish their own first address information based on the first analog signal, thereby enabling the identification of the data source and the determination of the location of the electronic information acquisition unit during the detection data transmission process.

[0008] Furthermore, setting different ranges corresponding to the different electronic information acquisition units means, specifically, The method involves adjusting the resistance value of the output pull-up resistor so that the input pull-down resistors of each electronic data acquisition unit connected to the output pull-up resistor, in combination with the output pull-up resistor, obtain a corresponding range.

[0009] This invention modifies the first analog signal input to an electronic information acquisition unit by combining an output pull-up resistor and an input pull-down resistor, thereby enabling the input of different first analog signals to different electronic information acquisition units and establishing mutually distinguishable first address information.

[0010] Furthermore, transmitting a first analog signal corresponding to each electronic information acquisition unit based on the range corresponding to each electronic information acquisition unit means, specifically, Based on the range corresponding to each electronic information acquisition unit, the rated operating voltage is converted into multiple first analog signals with different voltage values, The method involves transmitting a first analog signal corresponding to the respective range to each of the multiple electronic information acquisition units based on a predetermined transmission order.

[0011] This invention converts the operating voltage by setting different ranges to obtain a first analog signal of the synchronous voltage value.

[0012] Furthermore, the fact that the multiple electronic information acquisition units each generate their own first address information means, specifically, The plurality of electronic information acquisition units each identify the voltage value of the first analog signal they have received, and based on the identified voltage value, each unit establishes first address information corresponding to the first analog signal it has received.

[0013] Furthermore, after establishing the first address information corresponding to each received first analog signal, The aforementioned electronic information acquisition unit stores its own first address information, The electronic information acquisition unit includes clearing the stored first address information when the first analog signal it receives is 0V.

[0014] The electronic information acquisition unit in this invention establishes mutually distinct first address information based on the received first analog signal, thereby avoiding interference problems when wirelessly connecting with detection equipment or detection device.

[0015] Furthermore, a first analog signal corresponding one-to-one with each of the multiple electronic information acquisition units is transmitted to each of the multiple electronic information acquisition units, Receiving a second analog signal from a test fixture or computer terminal, and identifying the voltage value of the second analog signal, The method includes establishing a unique second address based on the magnitude of the voltage value of the second analog signal, and including the second address in a radio operation command transmitted to the plurality of electronic information acquisition units.

[0016] This invention allows the electronic collection module to assign its own address, and also allows the detection device or equipment to assign an address based on a second analog signal, thereby distinguishing its own second address information from the address information of other detection devices, and thus avoiding interference problems that occur when multiple detection devices are used simultaneously.

[0017] Furthermore, after receiving multiple battery information to be measured uploaded by the multiple electronic information acquisition units via wireless communication, and determining the electronic information acquisition unit corresponding to each battery information to be measured based on the first address information of each of the multiple electronic information acquisition units, The battery information being measured includes cell voltage information and cell temperature information. This includes comparing data between the cell voltage information and cell temperature information based on the actual operating parameters of the individual cell, determining whether or not an abnormality has occurred in the electronic information acquisition unit corresponding to the battery information being measured, and uploading the determination result obtained from the data comparison to the production cloud MES system.

[0018] On the other hand, embodiments of the present invention further provide a line-off detection device applicable to a wireless communication BMS, which includes an address establishment module, a communication establishment module, and a test data acquisition module.

[0019] The address establishment module is used to transmit a first analog signal to each of the multiple electronic information acquisition units, each corresponding to one of the multiple electronic information acquisition units, and to cause each of the multiple electronic information acquisition units to generate its own first address information based on the first analog signal it receives.

[0020] The communication establishment module is used to transmit addressing information to the plurality of electronic information acquisition units, establish wireless communication with the plurality of electronic information acquisition units that respond to the addressing information, and to enable the plurality of electronic information acquisition units to upload the battery under test information with their respective first address information added.

[0021] The test data collection module receives a plurality of battery information to be measured uploaded by the plurality of electronic information collection units through wireless communication, and is used to determine the electronic information collection unit corresponding to each battery information to be measured based on the first address information of each of the plurality of electronic information collection units.

[0022] The present invention adopts a hardware connection method to transmit a first analog signal corresponding to an electronic information collection unit, and different electronic information collection units establish different first address information based on different first analog signals. Thereby, each electronic information collection unit establishes wireless communication with the detection device through its own unique first address information, completes the test by transmitting the battery information to be measured through wireless communication, and when the detection device detects a plurality of electronic information collection units, it can avoid the interference problem that the position of the electronic information collection unit cannot be determined and the origin of the battery information to be measured cannot be identified.

[0023] On the other hand, an embodiment of the present invention further provides a line-off detection system applied to a wireless communication BMS, including a line-off detection facility and a plurality of electronic information collection units.

[0024] The line-off detection facility is used to execute the line-off detection method applied to the wireless communication BMS described in any one of the embodiments of the present invention. The line-off detection facility includes a communication enabling module, and the communication enabling module is used to transmit a first analog signal to the plurality of electronic information collection units and receive the first address information uploaded by the plurality of electronic information collection units.

[0025] After receiving a first analog signal corresponding one-to-one to the plurality of electronic information collection units, the plurality of electronic information collection units are used to generate first address information corresponding to the received first analog signal, and in response to the addressing information of the line-off detection facility. Based on the first address informationThe electronic information acquisition unit is used to establish a wireless communication connection with the line-off detection equipment, and to collect information about the battery under test and upload the information to the line-off detection equipment via wireless communication. The electronic information acquisition unit includes an address detection module, which is used to perform voltage identification on a first analog signal when line-off is detected and to generate first address information corresponding to the magnitude of the voltage value of the first analog signal. [Effects of the Invention]

[0026] This invention employs a hardware connection method to transmit a first analog signal corresponding to an electronic information acquisition unit, and different electronic information acquisition units establish different first address information based on different first analog signals. As a result, each electronic information acquisition unit establishes wireless communication with the detection device using its own unique first address information, transmits the battery under test information via wireless communication to complete the test, and avoids interference problems such as the inability of the detection device to determine the location of an electronic information acquisition unit or identify the source of the battery under test information when detecting multiple electronic information acquisition units. [Brief explanation of the drawing]

[0027] [Figure 1] This is a schematic flowchart of one embodiment of a line-off detection method applied to a wireless communication BMS provided by the present invention. [Figure 2] This is a schematic flowchart of another embodiment of the line-off detection method applied to the wireless communication BMS provided by the present invention. [Figure 3] This is a schematic flowchart of yet another embodiment of the line-off detection method applied to the wireless communication BMS provided by the present invention. [Figure 4] This is a schematic diagram of the structure of one embodiment of a line-off detection device applied to a wireless communication BMS provided by the present invention. [Figure 5] This is a timing diagram of information transmission in a line-off detection system applied to a wireless communication BMS provided by the present invention. [Figure 6]This is a schematic diagram of the structure of one embodiment of the line-off detection equipment provided by the present invention. [Figure 7] This is a schematic diagram of the structure of one embodiment of the electronic information acquisition unit provided by the present invention. [Modes for carrying out the invention]

[0028] The following describes the technical solutions in embodiments of the present invention clearly and completely, by combining the drawings of the embodiments. Clearly, the embodiments described are only a selection of embodiments of the present invention, not all embodiments. All other embodiments that can be obtained based on the embodiments of the present invention, without the creative work of a person ordinary in the art, are all within the scope of the protection of the present invention.

[0029] Example 1 Referring to Figure 1, this is a schematic flowchart of one embodiment of a line-off detection method applied to a wireless communication BMS provided by the present invention, which mainly includes steps 101 to 103, specifically as follows.

[0030] Step 101: A first analog signal is transmitted to each of the multiple electronic information acquisition units, each corresponding to one of the multiple electronic information acquisition units, so that each of the multiple electronic information acquisition units generates its own first address information based on the first analog signal it receives.

[0031] In this embodiment, the plurality of first analog signals are a plurality of analog signals having different voltage values ​​from each other. After each of the plurality of electronic information acquisition units receives the first analog signals with different voltage values, each generates its own first address information based on the first analog signals it received, thereby allowing the different electronic information acquisition units to have different first address information and to distinguish from each other.

[0032] In this embodiment, the electronic information acquisition unit may be an acquisition module for acquiring battery information, and the acquisition module employs wireless communication connection with the BMS battery management system to complete the acquisition of the voltage and temperature of individual cells.

[0033] In this embodiment, the wireless communication can use TI's CC2662R-Q1 wireless communication protocol.

[0034] In this embodiment, multiple electronic information acquisition units can connect to each other via wireless communication.

[0035] Step 102: Send addressing information to the multiple electronic information acquisition units, establish wireless communication with the multiple electronic information acquisition units that respond to the addressing information, and have the multiple electronic information acquisition units upload the battery under test information with their respective first address information added.

[0036] In this embodiment, after the line-off detection device applied to the wireless communication BMS and a plurality of electronic information acquisition units establish a connection via their respective wireless communication modules, information interaction between them is performed using an addressing method. The line-off detection device transmits a signal to the plurality of electronic information acquisition units, and only the electronic information acquisition units having the corresponding first address information respond. The responding electronic information acquisition units then perform the appropriate operation (action) based on the signal emitted by the line-off monitoring device.

[0037] Step 103: The system receives multiple battery information samples uploaded by the multiple electronic information collection units via wireless communication, and determines the electronic information collection unit corresponding to each battery information sample based on the first address information of each of the multiple electronic information collection units.

[0038] In this embodiment, the electronic information acquisition unit collects relevant information about multiple individual cells within the battery under test, such as cell voltage and cell temperature. After collecting the battery information, the electronic information acquisition unit uploads the battery information in response to a command from the line-off detection device. The line-off detection device can display the battery information on a touchscreen interaction module.

[0039] In this embodiment, each battery under test information includes a certain first address information, and the line-off detection device can identify the electronic information acquisition unit corresponding to each battery under test information based on the differences in the first address information.

[0040] Referring to Figure 2, this is a schematic flowchart of another embodiment of the line-off detection method applied to a wireless communication BMS provided by the present invention, which mainly includes steps 201 to 203, specifically as follows.

[0041] In this embodiment, step 101 specifically includes steps 201 to 203.

[0042] Step 201: Use a test fixture to connect and secure the multiple electronic information acquisition units.

[0043] In this embodiment, the test fixture is an electronic test fixture, such as a ZF electric vehicle test system or an ICT test fixture, and is used to test electronic devices on an automobile, such as an electronic information acquisition unit, in terms of function, lifespan, performance, etc.

[0044] In this embodiment, the connection fixing can be achieved by a physical hardwire connection, connecting the communication enable module of the line-off detection device to the address detection modules of the multiple electronic information acquisition units, so that the line-off detection device can transmit a first analog signal to the electronic information acquisition units.

[0045] Step 202: Set different ranges corresponding to different electronic information acquisition units, and transmit a first analog signal corresponding to each electronic information acquisition unit based on the range corresponding to each electronic information acquisition unit.

[0046] In this embodiment, setting different ranges for different electronic data acquisition units specifically involves adjusting the resistance value of the output pull-up resistor and combining the input pull-down resistor of each electronic data acquisition unit connected to the output pull-up resistor with the output pull-up resistor to obtain a single corresponding range.

[0047] In this embodiment, the output pull-up resistor is installed in the communication enable module of the line-off detection device, and the step width (interval) between each range of the output pull-up resistor is a first predetermined resistance value.

[0048] This invention modifies the first analog signal input to an electronic information acquisition unit by combining an output pull-up resistor and an input pull-down resistor, thereby enabling the input of different first analog signals to different electronic information acquisition units and establishing mutually distinguishable first address information.

[0049] In this embodiment, transmitting a first analog signal corresponding to each electronic information acquisition unit based on the range corresponding to each electronic information acquisition unit specifically means converting the rated operating voltage into a plurality of first analog signals with different voltage values ​​based on the range corresponding to each electronic information acquisition unit, and transmitting the first analog signal corresponding to the respective range to the plurality of electronic information acquisition units based on a predetermined transmission order.

[0050] This invention converts the operating voltage by setting different ranges to obtain a first analog signal of the synchronous voltage value.

[0051] In this embodiment, the output pull-up resistor and input pull-down resistor convert the voltage value of the operating voltage using a voltage divider method, so that different electronic information acquisition units receive first analog signals with different voltage values ​​in different ranges, thereby allowing different electronic information 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 information acquisition unit under test is set to input analog signal detection, the input pull-down resistor is connected to ground, and the output pull-up resistor is positioned so that its level is pulled up to the power supply voltage by the communication enable module of the line-off detection device of the wireless communication BMS. The operating voltage and resistance values ​​can be adjusted according to the actual test requirements. For example, assuming an operating voltage of 5.0V, the input pull-down resistor of the address detection module of the wireless communication electronic information acquisition unit under test can be set to 10K, with a default range of 10. The output pull-up resistor of the communication enable module of the line-off detection device can be set from 1K to 10K, with 1K intervals representing resistance values. This ensures the simultaneous use of line-off detection devices in 10 wireless communication battery management systems, and each line-off detection device in a wireless communication battery management system can simultaneously monitor, measure, and connect to 10 electronic information acquisition units.

[0052] This invention enables the physical connection between different electronic information acquisition units to be fixed using a test jig, and the transmission of different first analog signals to different electronic information acquisition units by range setting. Furthermore, the electronic information acquisition units establish their own first address information based on the first analog signal, thereby enabling the identification of the data source and the determination of the location of the electronic information acquisition unit during the detection data transmission process.

[0053] In this embodiment, the generation of first address information by the plurality of electronic information acquisition units specifically includes step 203.

[0054] Step 203: Each of the multiple electronic information acquisition units identifies the voltage value of the first analog signal it has received, and based on the identified voltage value, each unit establishes first address information corresponding to the first analog signal it has received.

[0055] In this embodiment, after establishing first address information corresponding to the first analog signal received by each electronic information acquisition unit, the electronic information acquisition unit stores its own first address information, and when the first analog signal received by the electronic information acquisition unit is 0V, the stored first address information is cleared. In order for each electronic information acquisition unit to re-establish pairing with the line-off detection device at the next detection, after receiving a first analog signal of 0V, the electronic information acquisition unit deletes the stored first address information.

[0056] In this embodiment, the first address information is 2 bits of address information.

[0057] The electronic information acquisition unit in this invention establishes mutually distinct first address information based on the received first analog signal, thereby avoiding interference problems when wirelessly connecting with detection equipment or detection device.

[0058] Referring to Figure 3, this is a schematic flowchart of yet another embodiment of the line-off detection method applied to a wireless communication BMS provided by the present invention, which mainly includes steps 301 to 302, specifically as follows.

[0059] Step 301: Receive a second analog signal from a test fixture or computer terminal and identify the voltage value of the second analog signal.

[0060] In this embodiment, the second analog signal is set by the test personnel as needed.

[0061] In this embodiment, test personnel can transmit second analog signals with different voltage values ​​to different line-off detection devices through a test fixture, and different test fixtures establish different second address information based on the different second analog signals.

[0062] Step 302: Based on the magnitude of the voltage value of the second analog signal, a unique second address information is established, and the second address information is included in the radio operation command to be transmitted to the plurality of electronic information acquisition units.

[0063] In this embodiment, different line-off detection devices have different second address information, thereby enabling multiple line-off detection devices to establish wireless communication connections with different electronic collection modules, and avoiding interference between different line-off detection devices.

[0064] This invention allows the electronic collection module to assign its own address, and also allows the detection device or equipment to assign an address based on a second analog signal, thereby distinguishing its own second address information from the address information of other detection devices, and thus avoiding interference problems that occur when multiple detection devices are used simultaneously.

[0065] Furthermore, after receiving multiple battery information to be measured uploaded by the multiple electronic information acquisition units via wireless communication, and determining the electronic information acquisition unit corresponding to each battery information to be measured based on the first address information of each of the multiple electronic information acquisition units, The battery information being measured includes cell voltage information and cell temperature information. This includes comparing data between the cell voltage information and cell temperature information based on the actual operating parameters of the individual cell, determining whether or not an abnormality has occurred in the electronic information acquisition unit corresponding to the battery information being measured, and uploading the determination result obtained from the data comparison to the production cloud MES system.

[0066] In this embodiment, the line-off detection device collects the battery information uploaded by the electronic information acquisition unit, and also compares the collected telegraph information with the current cell voltage information and current cell temperature information. The current cell voltage information and current cell temperature information are from the wireless BMS. If the error result of the data comparison of the cell voltage information and / or cell temperature information for any one of the battery information under test is greater than a first predetermined value, it indicates that an abnormality has occurred in the electronic information acquisition unit corresponding to that battery information. The determination result is transmitted to the cloud MES system via the GPRS module of the line-off detection device and managed therefor.

[0067] Referring to Figure 4, this is a schematic diagram of the structure of one embodiment of a line-off detection device applied to a 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.

[0068] In this embodiment, the address establishment module 401 is used to transmit a first analog signal to each of the multiple electronic information acquisition units, each corresponding to one of the multiple electronic information acquisition units, and to generate its own first address information based on the first analog signal it receives.

[0069] In this embodiment, the address establishment module 401 includes a hardwire connection unit, a range setting unit, and an address establishment unit. The hardwire connection unit is used to connect and fix the multiple electronic information acquisition units using a test fixture. The range setting unit is used to set different ranges corresponding to different electronic information acquisition units and to transmit a first analog signal corresponding to each electronic information acquisition unit based on the range corresponding to each electronic information acquisition unit. The address establishment unit is used to identify the voltage value of the first analog signal received by each of the multiple electronic information acquisition units and to establish first address information corresponding to the received first analog signal based on the identified voltage value.

[0070] In this embodiment, the following are executed simultaneously with the address establishment module 401: a signal setting module and a detection device address establishment module. The signal setting module is used to receive a second analog signal from a test fixture or computer terminal and to 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 magnitude of the voltage value of the second analog signal and to include the second address information in the radio operation command transmitted to the plurality of electronic information acquisition units.

[0071] The communication establishment module 402 is used to transmit addressing information to the plurality of electronic information acquisition units, establish wireless communication with the plurality of electronic information acquisition units that respond to the addressing information, and cause the plurality of electronic information acquisition units to upload the battery under test information with their respective first address information added.

[0072] The test data acquisition module 403 receives multiple battery information under test uploaded by the multiple electronic information acquisition units via wireless communication and is used to determine the electronic information acquisition unit corresponding to each battery information under test based on the first address information of each of the multiple electronic information acquisition units.

[0073] In this embodiment, a data comparison module is also included after the test data acquisition module 403. The battery information under test includes cell voltage information and cell temperature information. The data comparison module performs a data comparison of the cell voltage information and cell temperature information based on the actual operating parameters of the individual cell, determines whether or not an abnormality has occurred in the electronic information acquisition unit corresponding to the battery information under test, and is used to upload the determination result obtained from the data comparison to the production cloud MES system.

[0074] Referring to Figure 5, this is a timing diagram of information transmission for a line-off detection system applied to a wireless communication BMS provided by the present invention. The line-off detection system applied to a wireless communication BMS includes line-off detection equipment and a plurality of electronic information acquisition units.

[0075] In this embodiment, the line-off detection equipment is used to perform a line-off detection method applicable to a wireless communication BMS described in any one of the embodiments of the present invention. Referring to Figure 6, a schematic diagram of the structure of one embodiment of the line-off detection equipment provided by the present invention, the line-off detection equipment includes a communication enable module, the communication enable module is used to transmit a first analog signal to the plurality of electronic information acquisition units and to receive first address information uploaded by the plurality of electronic information acquisition units.

[0076] In this embodiment, the line-off detection device further includes a central processing module, a wireless communication module, a system power supply module, a GPRS communication module, and a touchscreen interaction module. The central processing module establishes bidirectional communication with the communication enable module, wireless communication module, GPRS communication module, and touchscreen interaction module, respectively. The system power supply module is used to distribute and manage power to the internal power supplies of all modules of the line-off detection device. The wireless communication module is used to establish wireless communication with the wireless communication chip of the electronic information acquisition unit. The GPRS communication module is responsible for connecting to the production department cloud MES system and is used to ensure the accurate transmission of test data. The touchscreen interaction module is used for inputting and displaying commands for production tests, and also for displaying the battery under test information uploaded by the electronic information acquisition unit, thereby completing tasks such as starting a test task, ending a test task, setting parameters, and displaying information. The central processing module is used for mutual scheduling between each module.

[0077] Multiple electronic information acquisition units are used to generate their respective first address information after receiving multiple first analog signals that correspond one-to-one with the multiple electronic information acquisition units, and also in response to the addressing information of the line-off detection equipment. Based on the first address information It is used to establish a wireless communication connection with the line-off detection equipment, and also to collect information on the battery under test and upload the information to the line-off detection equipment via wireless communication. Referring to Figure 7, it is a schematic diagram of the structure of one embodiment of the electronic information acquisition unit provided by the present invention, the electronic information acquisition unit includes an address detection module, the address detection module is used to perform voltage identification on a first analog signal when line-off is detected and to generate first address information corresponding to the magnitude of the voltage value of the first analog signal.

[0078] In this embodiment, the electronic information acquisition unit further includes a front-end acquisition chip, a power supply chip (supply power chip), a communication conversion chip, and a wireless communication chip. The front-end acquisition chip is used to acquire the voltage and temperature of individual cells 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 line-off detection device. The communication conversion chip is used for interconnection between multiple electronic information acquisition units.

[0079] This invention employs a hardware connection method to transmit a first analog signal corresponding to an electronic information acquisition unit, and different electronic information acquisition units establish different first address information based on different first analog signals. As a result, each electronic information acquisition unit establishes wireless communication with the detection device using its own unique first address information, transmits the battery under test information via wireless communication to complete the test, and avoids interference problems such as the inability of the detection device to determine the location of an electronic information acquisition unit or identify the source of the battery under test information when detecting multiple electronic information acquisition units.

[0080] The specific embodiments described above have further illustrated the objectives, technical solutions, and beneficial effects of the present invention. However, it should be understood that these 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. Transmitting a first analog signal to each of the multiple electronic information acquisition units, each corresponding to one of the multiple electronic information acquisition units, and having each of the multiple electronic information acquisition units generate its own first address information based on the first analog signal it receives, The process involves transmitting addressing information to the aforementioned multiple electronic information acquisition units, establishing wireless communication with the multiple electronic information acquisition units that respond to the addressing information, and having the multiple electronic information acquisition units upload the battery information to be measured with their respective first address information added. The system receives multiple battery information under test uploaded by the multiple electronic information acquisition units via wireless communication, and determines the electronic information acquisition unit corresponding to each battery information under test based on the first address information of each of the multiple electronic information acquisition units. A line-off detection method applicable to a wireless communication BMS, characterized by including the following:

2. Transmitting a first analog signal that corresponds one-to-one with each of the aforementioned multiple electronic information acquisition units means, specifically, The test fixture is used to connect and fix the multiple electronic information acquisition units, This involves setting different ranges for different electronic information acquisition units and transmitting a first analog signal corresponding to each electronic information acquisition unit based on the range corresponding to each unit. A line-off detection method applicable to a wireless communication BMS according to claim 1, characterized by including the following:

3. Setting different ranges corresponding to the different electronic information acquisition units means, specifically, A line-off detection method applicable to a wireless communication BMS according to claim 2, characterized in that the resistance value of the output pull-up resistor is adjusted so that the input pull-down resistors of each electronic information acquisition unit connected to the output pull-up resistor are combined with the output pull-up resistor to obtain a corresponding range.

4. Transmitting a first analog signal corresponding to each electronic information acquisition unit based on the range corresponding to each electronic information acquisition unit means, specifically, Based on the range corresponding to each electronic information acquisition unit, the rated operating voltage is converted into multiple first analog signals with different voltage values, Based on a predetermined transmission order, a first analog signal corresponding to the respective range is transmitted to the plurality of electronic information acquisition units, A line-off detection method applicable to a wireless communication BMS according to claim 2, characterized by including the following:

5. The generation of first address information by the aforementioned multiple electronic information acquisition units means, specifically, A line-off detection method applicable to a wireless communication BMS according to claim 1, characterized in that each of the plurality of electronic information acquisition units identifies the voltage value of the first analog signal it has received, and establishes first address information corresponding to the first analog signal it has received based on the voltage value it has identified.

6. After establishing the first address information corresponding to each received first analog signal, The aforementioned electronic information acquisition unit stores its own first address information, When the first analog signal received by the electronic information acquisition unit is 0V, the stored first address information is cleared. A line-off detection method applicable to a wireless communication BMS according to claim 5, characterized by including the following:

7. A first analog signal is transmitted to each of the aforementioned multiple electronic information acquisition units, corresponding to each of the aforementioned multiple electronic information acquisition units in a one-to-one manner. Receiving a second analog signal from a test fixture or computer terminal, and identifying the voltage value of the second analog signal, Based on the magnitude of the voltage value of the second analog signal, a unique second address information is established, and the wireless operation command transmitted to the plurality of electronic information acquisition units includes the second address information. A line-off detection method applicable to a wireless communication BMS according to any one of claims 1 to 6, characterized by including the following:

8. The plurality of battery information to be measured, uploaded by the plurality of electronic information collection units via wireless communication, is received, and after determining the electronic information collection unit corresponding to each battery information to be measured based on the first address information of each of the plurality of electronic information collection units, The battery information being measured includes cell voltage information and cell temperature information. Based on the actual operating parameters of the individual cell, the cell voltage information and cell temperature information are compared using data analysis to determine whether or not an abnormality has occurred in the electronic information acquisition unit corresponding to the measured battery information, and the results of the data comparison are uploaded to the production cloud MES system. A line-off detection method applicable to a wireless communication BMS according to any one of claims 1 to 6, characterized by including the following:

9. A line-off detection device applied to a wireless communication BMS including an address establishment module, a communication establishment module, and a test data acquisition module, The address establishment module is used to transmit a first analog signal to each of the multiple electronic information acquisition units, each corresponding to one of the multiple electronic information acquisition units, and to cause each of the multiple electronic information acquisition units to generate its own first address information based on the first analog signal it receives. The communication establishment module is used to transmit addressing information to the plurality of electronic information acquisition units, establish wireless communication with the plurality of electronic information acquisition units that respond to the addressing information, and to enable the plurality of electronic information acquisition units to upload the battery information to be measured with their respective first address information added. The line-off detection device applied to a wireless communication BMS is characterized in that the test data acquisition module receives multiple battery information under test uploaded by the multiple electronic information acquisition units via wireless communication, and is used to determine the electronic information acquisition unit corresponding to each battery information under test based on the first address information of each of the multiple electronic information acquisition units.

10. A line-off detection system applicable to a wireless communication BMS including line-off detection equipment and multiple electronic information collection units, The line-off detection equipment is used to perform a line-off detection method applicable to a wireless communication BMS as described in any one of claims 1 to 8, the line-off detection equipment includes a communication enable module, the communication enable module is used to transmit a first analog signal to the plurality of electronic information acquisition units and to receive first address information uploaded by the plurality of electronic information acquisition units, A line-off detection system applicable to a wireless communication BMS, characterized in that the plurality of electronic information acquisition units are used to generate first address information corresponding to the received first analog signal after receiving a first analog signal that corresponds one-to-one with the plurality of electronic information acquisition units, to respond to addressing information of the line-off detection equipment and establish a wireless communication connection with the line-off detection equipment, and to collect battery information under test and upload the battery information under test to the line-off detection equipment via wireless communication, the electronic information acquisition unit includes an address detection module, the address detection module is used to perform voltage identification on the first analog signal when line-off is detected and to generate first address information corresponding to the magnitude of the voltage value of the first analog signal.

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