New energy vehicle operation safety detection system and detection method

Abstract

This invention relates to a safety testing system and method for new energy vehicles, belonging to the field of new energy vehicle testing technology, and solves the technical problem of limited application scope of existing new energy vehicle safety testing equipment. The testing system includes: a generator, a charging module, a power module group, a control module, a display module, a communication module, a charging testing module, and a DC charging gun. The new energy vehicle safety testing system of this invention uses a high-power generator as its power source, enabling the testing of the safety of the power battery, drive motor, electronic control system, and electrical safety of new energy vehicles. Compared to existing technologies that use a 380V industrial power grid as a power source, the absence of grid limitations increases the application scope and flexibility of the new energy vehicle safety testing equipment.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle testing technology, and in particular to a new energy vehicle operation safety testing system and testing method. Background Technology

[0002] With increasing global awareness of environmental protection and the urgent need for energy transition, new energy vehicles, as an important direction for future transportation development, have seen their market share rise year by year. With their low emissions and low energy consumption, new energy vehicles are gradually becoming an important alternative to traditional fuel vehicles. However, with the popularization of new energy vehicles and the frequent occurrence of accidents such as fires and loss of control, the operational safety of new energy vehicles has received widespread attention.

[0003] The safety testing of new energy vehicles includes testing for the safety of power batteries, drive motors, electronic control systems, and electrical systems. The national standard GB / T 44500—2024, "Test Procedures for the Operational Safety Performance of New Energy Vehicles," is the only testing standard for new energy vehicles in my country. It clearly stipulates the testing equipment and requirements for power battery safety, drive motor safety, electronic control system safety, and electrical safety. Specifically, the charging safety testing equipment for power batteries should meet the requirement of "maximum DC charging power greater than or equal to 60kW"; the power battery safety (charging) test should meet the requirement of "continuous charging time not less than 180 seconds." That is, during the charging safety test of power batteries, charging equipment with a DC charging power greater than or equal to 60kW should be used for short-term charging.

[0004] Currently, the mainstream technology for power battery charging safety testing equipment on the market involves installing testing devices inside or outside high-power charging piles. For example, the technical solution disclosed in Chinese patent document CN114137428A connects a portable power battery safety testing device in series with the charging pile. The main structure of a charging pile includes: a 380V industrial power supply, a three-phase smart meter, a charging module, a switching power supply, a communication module, a card reader module, a touch screen, a controller, and a DC insulation testing module. Because it requires access to 380V industrial power, high-power charging piles can only be installed in fixed locations. Since existing power battery charging safety testing equipment relies on high-power charging piles, it also limits the scope of application for new energy vehicle operation safety testing equipment, causing inconvenience for new energy vehicle operation safety testing. Summary of the Invention

[0005] The present invention aims to solve the technical problem of the limited application scope of existing new energy vehicle operation safety testing equipment, and provides a new energy vehicle operation safety testing system and testing method.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0007] A new energy vehicle operation safety detection system includes: a generator, a charging module, a power supply module group, a control module, a display module, a communication module, a charging detection module, and a DC charging gun;

[0008] The generator is connected to the charging module, which is also connected to the DC charging gun; the DC charging gun is also connected to the communication module and the charging detection module.

[0009] The control module is connected to the charging module, communication module, charging detection module, and display module respectively;

[0010] The generator is also connected to the power module group;

[0011] The power module group is also connected to the charging module, control module, communication module, charging detection module, and display module respectively;

[0012] The generator is used to provide power to the charging module and power module assembly;

[0013] The charging module is used to convert the three-phase AC power generated by the generator into DC power to charge the vehicle's power battery.

[0014] The power module group is used to convert the three-phase AC power generated by the generator into DC power of different voltages, providing power to the control module, communication module, charging detection module and display module;

[0015] The control module is used to control the operation of the charging module, communication module, charging detection module, and display module respectively.

[0016] The display module is used to display the test results;

[0017] The communication module is used to enable communication between the control module and the charging module, as well as communication between the control module and the vehicle's battery management system (BMS).

[0018] The charging detection module is used to read the charging parameters of the vehicle's power battery;

[0019] The DC charging gun is used to connect to the vehicle's DC charging socket interface.

[0020] The above technical solution also includes: a host, a cloud server, an electrical detection module, an OBD reading module, and an electrical detection port;

[0021] The electrical testing module is connected to both the DC charging gun and the electrical testing port; the electrical testing module is also connected to the power supply module group.

[0022] The host is connected to both the control module and the cloud server.

[0023] The electrical test port is used to connect to the phase wire terminal of the vehicle's AC charging dock interface and the door frame;

[0024] The power module group is also used to convert the three-phase AC power generated by the generator into DC power to provide power to the main unit; and to power the electrical detection module and OBD reading module;

[0025] The control module is also used to control the operation of the electrical detection module and the OBD reading module;

[0026] The electrical testing module is used to measure the insulation resistance and potential balance of a vehicle;

[0027] The OBD reading module is used to read the discharge parameters of the vehicle's power battery;

[0028] The host is used to analyze, store, and upload detection information;

[0029] The cloud server is used to store and download the detection information.

[0030] In the above technical solution, the charging module is a DC power supply.

[0031] In the above technical solution, the generator is a 380V diesel motor.

[0032] In the above technical solution, the power module group consists of multiple switching power supplies.

[0033] In the above technical solution, the charging detection module is a CAN reading device.

[0034] In the above technical solution, the electrical testing module is a multi-range automatic resistance measuring device.

[0035] In the above technical solution, the OBD reading module is an OBD diagnostic terminal.

[0036] A method for testing the operational safety of new energy vehicles, applicable to the aforementioned new energy vehicle operational safety testing system, comprising the following steps:

[0037] Step 1: Start the generator to provide a stable power supply to the system and its various modules;

[0038] Step 2: After the communication module obtains the vehicle's charging information, the charging module adjusts the voltage and current to charge the vehicle's power battery.

[0039] Step 3: When the vehicle is charging, the charging detection module reads the highest temperature of the power battery, the highest voltage of a single battery cell, and the voltage range of a single battery cell.

[0040] Step 4: Display detection information;

[0041] The display module shows the highest temperature of the power battery, the highest voltage of a single battery cell, and the voltage range of a single battery cell.

[0042] A method for testing the operational safety of new energy vehicles, applicable to the aforementioned new energy vehicle operational safety testing system, comprising the following steps:

[0043] Step 1: Start the generator to provide a stable power supply to the system and its various modules;

[0044] Step 2: The electrical testing module tests the insulation resistance of the vehicle's DC charging dock interface and AC charging dock interface, as well as the vehicle's potential balance.

[0045] Step 3: After the communication module obtains the vehicle's charging information, the charging module adjusts the voltage and current to charge the vehicle's power battery.

[0046] Step 4: When the vehicle is charging, the charging detection module reads the highest temperature of the power battery, the highest voltage of a single battery cell, and the voltage range of a single battery cell.

[0047] Step 5: The OBD reading module checks the vehicle's power battery discharge safety, drive motor safety, and electronic control system safety;

[0048] Step 6: Output the detection results;

[0049] The host system aggregates all test data and conclusions, generates a final test report, and uploads it to the cloud server.

[0050] The present invention has the following beneficial effects:

[0051] The new energy vehicle operation safety testing system of the present invention uses a high-power generator as a power source, which can detect the safety of the power battery, drive motor, electronic control system and electrical safety of new energy vehicles. Compared with the existing technology that uses a 380V industrial power grid as a power source, the absence of power grid limitation increases the scope of application and flexibility of the new energy vehicle operation safety testing equipment.

[0052] The new energy vehicle operation safety detection system of the present invention shares a control mode and display module with the detection module and the charging module. In contrast, the prior art has a separate control system for the charging pile and the detection device. The present invention reduces one control system and saves the cost of new energy vehicle operation safety detection equipment.

[0053] The new energy vehicle operation safety detection system of the present invention only requires a short charging time and does not require a smart meter and card reader module in the charging pile. Compared with the existing technology, it further saves the cost of new energy vehicle operation safety detection equipment. Attached Figure Description

[0054] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0055] Figure 1 This is a schematic diagram of the architecture of the new energy vehicle operation safety detection system of the present invention in Example 1.

[0056] Figure 2 This is a schematic diagram of the architecture of the new energy vehicle operation safety detection system of the present invention in Example 2.

[0057] Figure 3 This is a flowchart illustrating the new energy vehicle operation safety testing method of the present invention in Example 2.

[0058] The reference numerals in the figure are:

[0059] 110 - Generator; 120 - Charging module; 130 - Power module group; 140 - Control module; 150 - Main unit; 160 - Cloud server;

[0060] 141-Communication module; 142-Charging detection module; 143-Electrical detection module; 144-OBD reading module; 145-Display module;

[0061] 181 - DC charging gun; 182 - Electrical detection port. Detailed Implementation

[0062] The new energy vehicle operation safety detection system of the present invention uses engine power supply, is not limited by the power grid, and can be installed on mobile devices such as automobiles to form a mobile new energy vehicle operation safety detection system.

[0063] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0064] Example 1

[0065] like Figure 1 As shown, the new energy vehicle operation safety detection system of the present invention includes: a generator 110, a charging module 120, a power supply module group 130, a control module 140, a display module 145, a communication module 141, a charging detection module 142, and a DC charging gun 181.

[0066] Among them, generator 110 is connected to charging module 120, and charging module 120 is also connected to DC charging gun 181; DC charging gun 181 is also connected to communication module 141 and charging detection module 142 respectively.

[0067] The control module 140 is connected to the charging module 120, the communication module 141, the charging detection module 142, and the display module 145 respectively.

[0068] The generator 110 is also connected to the power module group 130;

[0069] The power module group 130 is also connected to the charging module 120, the control module 140, the communication module 141, the charging detection module 142, and the display module 145, respectively.

[0070] The generator 110 is used to provide a stable power supply for the system and various modules. The generator 110 can be a 380V diesel motor with an output power of 100 kilowatts.

[0071] The charging module 120 is used to convert the three-phase AC power generated by the generator 110 into DC power to charge the vehicle's power battery. The charging module 120 can be powered by a DC power source.

[0072] The power module group 130 is used to convert the three-phase AC power generated by the generator 110 into DC power of different voltages, and to provide power to the various modules connected to it. The power module group 130 can be equipped with multiple switching power supplies.

[0073] The control module 140 is used to control the operation of the charging module 120, the communication module 141, the charging detection module 142, and the display module 145 respectively.

[0074] Display module 145 is used to display the detection results.

[0075] The communication module 141 is used to realize communication between the control module 140 and the charging module 120, and to realize communication between the control module 140 and the vehicle's battery management system (BMS).

[0076] The charging detection module 142 is used to read the charging parameters of the vehicle's power battery, and a CAN reading device can be selected.

[0077] The DC charging gun 181 is used to connect to the vehicle's DC charging socket interface.

[0078] The new energy vehicle operation safety testing method of the present invention is applicable to the above-mentioned Figure 1 The new energy vehicle operation safety detection system shown includes the following steps:

[0079] Step 1: Start generator 110 to provide a stable power supply to the system and various modules;

[0080] Step 2: After the communication module 141 obtains the vehicle's charging information, the charging module 120 adjusts the voltage and current to charge the vehicle's power battery.

[0081] After the DC charging gun 181 is connected to the vehicle's DC charging socket interface, the communication module 141 obtains the vehicle's charging information, and the control module 140 adjusts the corresponding output voltage and current of the charging module 120 to charge the vehicle's power battery.

[0082] Step 3: When the vehicle is charging, the charging detection module 142 reads the highest temperature of the power battery, the highest voltage of a single battery cell, and the voltage range of a single battery cell.

[0083] When the vehicle is charging, the control charging detection module 142 is activated, and the maximum temperature of the power battery, the maximum voltage of a single battery cell, and the voltage difference of a single battery cell are read through the S+ and S- ports built into the DC charging gun 181.

[0084] Step 4: Display detection information;

[0085] Display module 145 displays the highest temperature of the power battery, the highest voltage of a single battery cell, and the voltage difference of a single battery cell.

[0086] Example 2

[0087] The difference between this embodiment and Embodiment 1 is that the following components are added to the new energy vehicle operation safety detection system: electrical detection module 143, OBD reading module 144, electrical detection port 182, host 150, and cloud server 160.

[0088] Specifically:

[0089] like Figure 2 As shown, the new energy vehicle operation safety detection system of the present invention includes: a generator 110, a charging module 120, a power module group 130, a control module 140, a host 150, a cloud server 160, a communication module 141, a charging detection module 142, an electrical detection module 143, an OBD reading module 144, a display module 145, a DC charging gun 181, and an electrical detection port 182.

[0090] Among them, generator 110 is connected to charging module 120, and charging module 120 is also connected to DC charging gun 181; DC charging gun 181 is also connected to communication module 141, charging detection module 142, and electrical detection module 143 respectively.

[0091] The control module 140 is connected to the charging module 120, the communication module 141, the charging detection module 142, the electrical detection module 143, the OBD reading module 144, and the display module 145 respectively; the electrical detection module 143 is also connected to the electrical detection port 182; the control module 140 is also connected to the host 150, and the host 150 is also connected to the cloud server 160; the electrical detection port 182 is used to connect to the phase wire terminal of the vehicle's AC charging socket interface and the door frame;

[0092] The generator 110 is also connected to the power module group 130;

[0093] The power module group 130 is also connected to the charging module 120, the power module group 130, the control module 140, the communication module 141, the charging detection module 142, the electrical detection module 143, and the display module 145, respectively.

[0094] The generator 110 is used to provide a stable power supply for the system and various modules. The generator 110 can be a 380V diesel motor with an output power of 100 kilowatts.

[0095] The charging module 120 is used to convert the three-phase AC power generated by the generator 110 into DC power to charge the vehicle. The charging module 120 can be equipped with a DC power supply.

[0096] The control module 140 is used to control the operation of the charging module 120, communication module 141, charging detection module 142, electrical detection module 143, OBD reading module 144, and display module 145. The electrical detection module 143 is also connected to the electrical detection port 182.

[0097] The power module group 130 is used to convert the three-phase AC power generated by the generator 110 into DC power of different voltages to provide power to each module. The power module group 130 can be equipped with multiple switching power supplies.

[0098] The communication module 141 is used to realize communication between the control module 140 and the charging module 120, and to realize communication between the control module 140 and the battery management system (BMS).

[0099] The charging detection module 142 is used to read the charging parameters of the vehicle's power battery, and a CAN reading device can be selected.

[0100] The electrical testing module 143 is used to measure the insulation resistance and potential balance of a vehicle, and can be equipped with a multi-range automatic resistance measuring device.

[0101] The OBD reading module 144 is used to read the discharge parameters of the vehicle's power battery, and an OBD diagnostic terminal can be selected.

[0102] Display module 145 is used to display the detection results.

[0103] Host 150 is used to analyze, store, and upload detection information.

[0104] Cloud server 160 is used to store and download detection information.

[0105] The new energy vehicle operation safety testing method of the present invention, such as Figure 3 As shown, it includes the following steps:

[0106] Step 1: Start generator 110 to provide a stable power supply to the system and various modules;

[0107] Step 2: Electrical testing module 143 tests the insulation resistance of the vehicle's DC charging dock interface and AC charging dock interface, as well as the vehicle's potential balance.

[0108] The DC charging gun 181 is connected to the DC charging socket interface of the vehicle, and the multiple detection terminals of the electrical detection port 182 are respectively connected to the phase wire terminal and the door frame of the AC charging socket interface of the vehicle. The control module 140 controls the electrical detection module 143 to measure the insulation resistance of the DC charging socket interface, the insulation resistance of the AC charging socket interface, the potential balance between the conductive parts and the electrical platform, and the potential balance between conductive parts, and uploads the detection data to the host 150. The host 150 judges whether the detection result is qualified according to the set threshold.

[0109] Step 3: After the communication module 141 obtains the vehicle's charging information, the charging module 120 adjusts the voltage and current to charge the vehicle's power battery.

[0110] Once the insulation resistance of the DC charging socket interface is qualified, the electrical detection port 182 is disconnected. After the communication module 141 obtains the vehicle's charging information, the control module 140 adjusts the output voltage and current of the charging module 120 to charge the vehicle's power battery.

[0111] Step 4: When the vehicle is charging, the charging detection module 142 reads the highest temperature of the power battery, the highest voltage of a single battery cell, and the voltage range of a single battery cell.

[0112] When the vehicle is charging, the control charging detection module 142 is activated. It reads the highest temperature of the power battery, the highest voltage of a single battery cell, and the voltage difference of a single battery cell through the S+ and S- ports built into the DC charging gun 181, and uploads the read data to the host 150. The host 150 determines whether the detection results are qualified based on the set threshold.

[0113] Step 5: The OBD reading module 144 detects the vehicle's power battery discharge parameters, drive motor parameters, and electronic control system parameters;

[0114] Unplug the DC charging gun 181, connect the OBD reading module 144 to the vehicle's OBD interface, and drive the vehicle onto the chassis dynamometer. When the vehicle reaches the required speed and load, the control module 140 controls the OBD reading module 144 to read the maximum temperature of the power battery, the minimum voltage of a single battery cell, the temperature of the drive motor, the temperature of the motor controller, and the temperature of the DC / DC converter, and uploads the measured values ​​to the host 150. The host 150 determines whether the test results are qualified based on the set threshold.

[0115] Step 6: Output the detection results;

[0116] Host 150 aggregates all test data and conclusions, generates a final test report, and uploads it to cloud server 160.

[0117] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A new energy vehicle operation safety detection system, characterized in that, include: Generator (110), charging module (120), power module group (130), control module (140), display module (145), communication module (141), charging detection module (142) and DC charging gun (181). Among them, the generator (110) is connected to the charging module (120), and the charging module (120) is also connected to the DC charging gun (181); the DC charging gun (181) is also connected to the communication module (141) and the charging detection module (142) respectively. The control module (140) is connected to the charging module (120), the communication module (141), the charging detection module (142), and the display module (145), respectively; The generator (110) is also connected to the power module group (130); The power module group (130) is also connected to the charging module (120), the control module (140), the communication module (141), the charging detection module (142), and the display module (145), respectively; The generator (110) is used to provide power to the charging module (120) and the power module group (130); The charging module (120) is used to convert the three-phase AC power generated by the generator (110) into DC power to charge the vehicle's power battery. The power module group (130) is used to convert the three-phase AC power generated by the generator (110) into DC power of different voltages, and to provide power to the control module (140), communication module (141), charging detection module (142) and display module (145); The control module (140) is used to control the operation of the charging module (120), the communication module (141), the charging detection module (142), and the display module (145) respectively; The display module (145) is used to display the detection results; The communication module (141) is used to realize communication between the control module (140) and the charging module (120), and to realize communication between the control module (140) and the vehicle's battery management system (BMS). The charging detection module (142) is used to read the charging parameters of the vehicle's power battery; The DC charging gun (181) is used to connect to the DC charging socket interface of the vehicle.

2. The new energy vehicle operation safety detection system according to claim 1, characterized in that, Also includes: The host (150), cloud server (160), electrical detection module (143), OBD reading module (144) and electrical detection port (182). The electrical testing module (143) is connected to the DC charging gun (181) and the electrical testing port (182) respectively; the electrical testing module (143) is also connected to the power module group (130); The host (150) is connected to the control module (140) and the cloud server (160) respectively; The electrical test port (182) is used to connect to the phase terminal of the vehicle's AC charging dock interface and the door frame; The power module group (130) is also used to convert the three-phase AC power generated by the generator (110) into DC power to provide power to the host (150); and to power the electrical detection module (143) and the OBD reading module (144); The control module (140) is also used to control the operation of the electrical detection module (143) and the OBD reading module (144); The electrical testing module (143) is used to measure the insulation resistance and potential balance of the vehicle; The OBD reading module (144) is used to read the discharge parameters of the vehicle's power battery; The host (150) is used to analyze, store, and upload detection information; The cloud server (160) is used to store and download detection information.

3. The new energy vehicle operation safety detection system according to claim 1 or 2, characterized in that, The charging module (120) is a DC power supply.

4. The new energy vehicle operation safety detection system according to claim 1 or 2, characterized in that, The generator (110) is a 380V diesel motor.

5. The new energy vehicle operation safety detection system according to claim 1 or 2, characterized in that, The power module group (130) consists of multiple switching power supplies.

6. The new energy vehicle operation safety detection system according to claim 1 or 2, characterized in that, The charging detection module (142) is a CAN reading device.

7. The new energy vehicle operation safety detection system according to claim 2, characterized in that, The electrical testing module (143) is a multi-range automatic resistance measuring device.

8. The new energy vehicle operation safety detection system according to claim 2, characterized in that, The OBD reading module (144) is an OBD diagnostic terminal.

9. A method for detecting the operational safety of new energy vehicles, characterized in that, It is applicable to the new energy vehicle operation safety detection system as described in claim 1, and the method includes the following steps: Step 1: Start the generator (110) to provide a stable power supply to the system and various modules; Step 2: After the communication module (141) obtains the vehicle's charging information, the charging module (120) adjusts the voltage and current to charge the vehicle's power battery. Step 3: When the vehicle is charging, the charging detection module (142) reads the highest temperature of the power battery, the highest voltage of a single battery cell, and the voltage range of a single battery cell. Step 4: Display detection information; The display module (145) displays the highest temperature of the power battery, the highest voltage of a single battery cell, and the voltage range of a single battery cell.

10. A method for detecting the operational safety of new energy vehicles, characterized in that, It is applicable to the new energy vehicle operation safety detection system as described in claim 2, and the method includes the following steps: Step 1: Start the generator (110) to provide a stable power supply to the system and various modules; Step 2: The electrical testing module (143) tests the insulation resistance of the vehicle's DC charging dock interface and AC charging dock interface, as well as the vehicle's potential balance. Step 3: After the communication module (141) obtains the vehicle's charging information, the charging module (120) adjusts the voltage and current to charge the vehicle's power battery. Step 4: When the vehicle is charging, the charging detection module (142) reads the highest temperature of the power battery, the highest voltage of a single battery cell, and the voltage range of a single battery cell. Step 5: The OBD reading module (144) checks the vehicle's power battery discharge safety, drive motor safety, and electronic control system safety; Step 6: Output the detection results; The host (150) summarizes all test data and test conclusions, forms the final test report, and uploads it to the cloud server (160).

Images