Battery management detection equipment and detection method

Abstract

The invention belongs to the technical field of detection equipment, and provides battery management detection equipment and a detection method.The battery management detection equipment comprises a power source, a master controller and a plurality of simulation battery monomers, the simulation battery monomers are sequentially connected in series, and the power source and the simulation battery monomers are connected in parallel; the master controller is electrically connected with the power supply; the main controller is in communication connection with the plurality of simulation battery monomers; the simulation battery monomer comprises a signal isolation module which is in communication connection with the master controller. The signal isolation module is electrically connected with the power supply; the main controller is used for controlling the plurality of simulation battery monomers to detect the battery; the single positive electrode and the single negative electrode of each single battery are connected with the corresponding control voltage monitoring circuit, so that the corresponding circuit is monitored, multiple groups of circuits are monitored, and the monitoring quantity is increased.

Description

Technical Field

[0001] This invention belongs to the field of testing equipment technology, and specifically relates to a battery management testing device and testing method. Background Technology

[0002] Battery management testing equipment is widely used in industries such as manufacturing, energy, and automotive to monitor BMS (Battery Management System) status parameters such as voltage, current, accuracy, and temperature. To ensure the reliability and stability of the battery management system, testing equipment (such as FCT / EOL testing equipment) plays a crucial role in production and maintenance.

[0003] Existing battery management testing equipment has the following drawbacks: The number of batteries that can be tested at the same time is small. The existing equipment's sensors and data acquisition system can only test the data of one or a few batteries at a time. When it is necessary to test the data of other batteries, they need to be manually replaced in order to complete the test, so the testing efficiency is low.

[0004] Insufficient testing accuracy: The sensors and data acquisition systems in existing equipment have limited accuracy, making it difficult to perform high-precision measurements of various parameters of the battery management system. This may lead to inaccurate test results, affecting the reliability and safety of the system.

[0005] Low level of automation: Existing testing equipment has a low level of automation, relying on manual intervention, which not only increases labor costs but also easily introduces human error. In addition, it lacks intelligent data analysis functions, making it impossible to monitor and adjust the testing process in real time.

[0006] With the rapid development of Industry 4.0 and intelligent manufacturing, modern industry has increasingly higher requirements for testing equipment, necessitating a high-efficiency, accurate, and automated battery management system testing device to address these issues. Summary of the Invention

[0007] To address the above problems, the present invention provides a battery management testing device, comprising a power supply, a main controller, and a plurality of simulated battery cells, wherein the plurality of simulated battery cells are connected in series, and the power supply and the plurality of simulated battery cells are connected in parallel; the main controller and the power supply are electrically connected; and the main controller and the plurality of simulated battery cells are communicatively connected. The simulated battery cell includes a signal isolation module, which is communicatively connected to the main controller and electrically connected to the power supply.

[0008] Furthermore, the simulated battery cell also includes a BMU, which is communicatively connected to the signal isolation module.

[0009] Furthermore, the simulated battery cell also includes a programmable isolation module, which is connected in communication with the BMU and electrically connected to the power supply being tested.

[0010] Furthermore, the programmable isolation module outputs the voltage and current values ​​that need to be simulated to the BMU.

[0011] Furthermore, the simulated battery cell also includes an isolated DC / DC module, the input of which is electrically connected to the power supply, and the output of which is electrically connected to the power input of the BMU.

[0012] Furthermore, the battery management testing equipment also includes a host computer, which communicates with the main controller.

[0013] Furthermore, adjacent simulated battery cells are connected sequentially with their negative and positive electrodes connected, and the positive electrode of the first simulated battery cell and the negative electrode of the last simulated battery cell serve as the positive and negative electrodes of the battery pack, respectively.

[0014] This invention also provides a battery management testing method, employing the aforementioned battery management testing equipment, including: The main controller controls the simulated battery cells to simulate the relevant characteristic parameters of the tested battery.

[0015] Furthermore, the battery management testing method also includes the following steps: After receiving the command from the main controller, the BMU of the simulated battery cell parses the command and controls the programmable isolation module to simulate the corresponding voltage and current signals. The BMU acquires the corresponding voltage and current signals simulated by the programmable isolation module and sends the voltage and current signals to the main controller. The host computer acquires the voltage and current signals collected by the main controller and displays them in real time.

[0016] Furthermore, several simulated battery cells are electrically connected to several batteries under test.

[0017] Beneficial effects of this invention: 1. The battery management testing device of the present invention includes a power supply, a main controller, and a plurality of simulated battery cells, wherein the plurality of simulated battery cells are connected in series, and the power supply and the plurality of simulated battery cells are connected in parallel; the main controller is electrically connected to the power supply; the main controller and the plurality of simulated battery cells are communicatively connected; the power supply is used to provide power, and the main controller is used to control the plurality of simulated battery cells to test the battery; by connecting the positive and negative terminals of each battery cell to corresponding control voltage monitoring lines, the corresponding lines are monitored, and multiple sets of lines are monitored, thereby increasing the number of monitoring lines; the present invention, in meeting the requirements of high-precision automated testing equipment for BMS, develops a testing device that can improve testing efficiency, accuracy, and automation, which has important practical significance and application value. Therefore, it has high adaptability and is easy to apply on a large scale to different usage environments, including automotive and energy storage fields.

[0018] 2. The simulated battery cell of the battery management testing device of the present invention includes a signal isolation module, which is bidirectionally connected to the main controller; the signal isolation module is electrically connected to the monitored power supply; the signal isolation module isolates the corresponding simulated battery cell from adjacent simulated battery cells, so that adjacent simulated battery cells are connected in series. By setting a signal isolation module in each simulated battery cell, all simulated battery cells are connected in series in sequence.

[0019] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of a battery management testing device in an embodiment of the present invention is shown.

[0022] Figure 2 A schematic flowchart of the battery management detection method in an embodiment of the present invention is shown.

[0023] Figure 3 A schematic flowchart of the battery management detection method in Embodiment 3 of the present invention is shown. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0025] Example 1 refer to Figure 1 The battery management testing equipment includes n modular simulated battery cells. (i = 0, 1, 2, ..., n), n modular simulated battery cells Series, modular simulation of battery cells The negative electrode of (i = 0, 1, 2, ..., n-1) and its adjacent modular simulated battery cell The positive electrode connection, the first modular simulated battery cell The single positive electrode serves as the positive electrode P of the battery pack, and the last modular simulated battery cell The negative electrode of the individual cell serves as the negative electrode N of the battery pack, and the power supply is connected to each battery cell to simulate an individual cell. The power supply is connected to the main controller; each modular analog battery cell includes a signal isolation module, a BMU, an isolated DC / DC module, and a programmable isolation module. The signal isolation module and the main controller are bidirectionally connected, and the signal isolation module and the BMU are connected via a communication bus; the signal isolation module transmits commands sent by the main controller to the BMU, and the signal isolation module controls the corresponding modular analog battery cell. (i = 0, 1, 2, ..., n) and other modular simulated battery cells (j=0,1,2…,n,j≠i) Isolation; connecting adjacent modular analog battery cells in series; signal isolation module electrically connected to power supply; isolation DC / DC module connected to the power input terminal of BMU, BMU connected to programmable isolation module through control line, BMU outputting commands to programmable isolation module through control line, thereby controlling programmable isolation module to work.

[0026] After receiving instructions from the BMU, the programmable isolation module outputs the required voltage and current values. Simultaneously, the BMU acquires the voltage and current signals output by the programmable isolation module and transmits them to the main controller via a signal isolation module. The main controller processes the relevant information and displays it in real-time on the host computer. Each modular simulated battery cell... (i = 0, 1, 2, ..., n) corresponds to a single positive electrode. (i = 0, 1, 2, ..., n) and a single negative electrode (i = 0, 1, 2, ..., n), these electrodes are connected to the corresponding control voltage monitoring lines when testing the battery management testing equipment (BMS).

[0027] Example 2 refer to Figure 1 A battery management testing device includes a power supply, a main controller, and a plurality of simulated battery cells. The simulated battery cells are connected in series, and the power supply and the simulated battery cells are connected in parallel. The main controller is electrically connected to the power supply and communicatively connected to the simulated battery cells. Further, the power supply provides power, and the main controller controls the simulated battery cells to perform battery testing. The device detects the battery by connecting the positive electrode of each battery cell... (i = 0, 1, 2, ..., n) and single-cell negative electrode (i = 0, 1, 2, ..., n) are connected to the corresponding control voltage monitoring lines, thereby realizing the monitoring of the corresponding lines and enabling the monitoring of multiple groups of lines, thus increasing the number of monitoring lines.

[0028] Furthermore, each simulated battery cell includes a signal isolation module, which is bidirectionally connected to the main controller and electrically connected to the power supply. Specifically, the signal isolation module isolates the corresponding simulated battery cell from adjacent simulated battery cells, connecting adjacent simulated battery cells in series. By providing a signal isolation module in each simulated battery cell, all simulated battery cells are connected in series sequentially.

[0029] Furthermore, the simulated battery cell also includes a BMU (Battery Management Unit), which is communicatively connected to the signal isolation module. Specifically, the BMU collects voltage, current, and other power-related data simulated by the programmable isolation module, such as voltage, current, and temperature; this data is then transmitted to the main controller via the signal isolation module, and the main controller transmits it to the host computer, which displays this data in real time on a screen.

[0030] In another embodiment of the present invention, the simulated battery cell further includes a programmable isolation module. The programmable isolation module is communicatively connected to the BMU and electrically connected to the power supply being tested. The programmable isolation module outputs the voltage and current values ​​to be simulated to the BMU. Specifically, after receiving instructions from the BMU, the programmable isolation module outputs the voltage and current values ​​to be simulated. Simultaneously, the BMU acquires the voltage and current signals output by the programmable isolation module and transmits them to the main controller through a signal isolation module.

[0031] Furthermore, the simulated battery cell also includes an isolated DC / DC module. The input terminal of the isolated DC / DC module is electrically connected to the power supply, and the output terminal of the isolated DC / DC module is electrically connected to the power input terminal of the BMU. The isolated DC / DC module converts AC power into DC power to provide power to the BMU. Simultaneously, the use of an isolated DC / DC module improves the safety of the equipment's power supply and enhances its anti-interference capability.

[0032] Furthermore, the battery management testing device also includes a host computer, which is communicatively connected to the main controller. The host computer includes a PC (e.g., a computer), a display screen, and input devices (mouse and keyboard, etc.). Commands are sent to the PC through the input devices. After receiving the commands, the PC controls the battery management testing device to work and displays the collected information about the batteries that need to be tested on the display screen.

[0033] Furthermore, adjacent simulated battery cells are connected sequentially with their negative and positive electrodes, and the positive electrode of the first simulated battery cell and the negative electrode of the last simulated battery cell are connected to the positive and negative electrodes of the battery pack being tested, respectively.

[0034] Example 3 refer to Figure 2 A battery management testing method, using the battery management testing equipment described in Examples 1 and 2, includes the following steps: The main controller controls the simulated battery cells to simulate the relevant characteristic parameters of the battery under test. Through this simulation method, relevant parameters can be obtained when the battery is not in use, thus enabling safe, flexible, and high-precision testing and verification of the battery management system's performance without directly using a real battery.

[0035] Furthermore, the battery management detection method further includes the following steps: Several simulated battery cells are electrically connected to several batteries under test.

[0036] After receiving the command from the main controller, the BMU of the simulated battery cell parses the command and controls the programmable isolation module to simulate the corresponding voltage and current signals. The BMU acquires the corresponding voltage and current signals simulated by the programmable isolation module and sends the voltage and current signals to the main controller; The host computer acquires the voltage and current signals collected by the main controller and displays them in real time.

[0037] Example 4 Another alternative implementation method, see reference. Figure 3 A battery management testing method includes the following steps: S1 connects the battery management system to the battery management testing equipment and simulates the positive electrode of a single battery cell. (i = 0, 1, 2, ..., n) and single-cell negative electrode (i = 0, 1, 2, ..., n) Connect the corresponding control voltage monitoring lines.

[0038] S2 sends control commands to the main controller via the host computer to control the modular battery simulation cell Ci to simulate the relevant characteristic parameters of a real chemical battery.

[0039] S3: After receiving the command from the host computer, the main controller sends a command to each modular analog battery cell Ci via the communication bus to set the voltage of each individual analog battery cell.

[0040] S4, after receiving the command, the BMU of each modular simulated battery cell Ci parses the command and controls the programmable isolation module through the control line.

[0041] S5, the programmable isolation module simulates the corresponding voltage according to the control commands of the BMU.

[0042] S6, the voltage and current signals output by the programmable isolation module are collected back to the BMU via analog-to-digital conversion, and the collected signals are sent to the main controller through the communication bus and displayed on the host computer in real time.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A battery management testing device, characterized in that, It includes a power supply, a main controller, and several simulated battery cells, wherein the simulated battery cells are connected in series, and the power supply and the simulated battery cells are connected in parallel; the main controller is electrically connected to the power supply; and the main controller and the simulated battery cells are communicatively connected. The simulated battery cell includes a signal isolation module, which is communicatively connected to the main controller; the signal isolation module is also electrically connected to the power supply.

2. The battery management testing equipment according to claim 1, characterized in that, The simulated battery cell also includes a BMU, which is communicatively connected to the signal isolation module.

3. The battery management testing equipment according to claim 2, characterized in that, The simulated battery cell also includes a programmable isolation module, which is communicatively connected to the BMU and electrically connected to the power supply being tested.

4. The battery management testing equipment according to claim 3, characterized in that, The programmable isolation module outputs the voltage and current values ​​to be simulated to the BMU.

5. The battery management testing equipment according to any one of claims 2-4, characterized in that, The simulated battery cell also includes an isolated DC / DC module, the input of which is electrically connected to the power supply, and the output of which is electrically connected to the power input of the BMU.

6. The battery management testing equipment according to claim 1, characterized in that, The battery management testing equipment also includes a host computer, which is communicatively connected to the main controller.

7. The battery management testing equipment according to claim 1, characterized in that, The adjacent simulated battery cells are connected sequentially with their negative and positive electrodes connected, and the positive electrode of the first simulated battery cell and the negative electrode of the last simulated battery cell serve as the positive and negative electrodes of the battery pack, respectively.

8. A battery management testing method, characterized in that, The battery management testing equipment according to any one of claims 1-7 includes, The main controller controls the simulated battery cells to simulate the relevant characteristic parameters of the tested battery.

9. The battery management testing method according to claim 8, characterized in that, The battery management testing method further includes the following steps: After receiving the command from the main controller, the BMU of the simulated battery cell parses the command and controls the programmable isolation module to simulate the corresponding voltage and current signals. The BMU acquires the corresponding voltage and current signals simulated by the programmable isolation module and sends the voltage and current signals to the main controller. The host computer acquires the voltage and current signals collected by the main controller and displays them in real time.

10. A battery management detection method according to claim 8, characterized in that, Several simulated battery cells are electrically connected to several batteries under test.

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