Three-power combined test system for special vehicle

Abstract

The utility model discloses a special vehicle three-power combined test system, which comprises a whole vehicle controller, a battery management system, a motor controller and a motor, and further comprises a test device, the test device comprises an acquisition system, a power analyzer, a dynamometer, a frequency converter and an upper computer, the dynamometer is connected with a motor main shaft through a coupler, and the frequency converter is connected with the upper computer. The frequency converter is connected with an external high-voltage power supply, the dynamometer is electrically connected with the frequency converter, the frequency converter is connected with the upper computer through a communication bus, the battery management system is connected with the upper computer through a CAN bus, the acquisition system is connected with the power analyzer, and the power analyzer is connected with the upper computer. The testing efficiency can be improved, and time can be saved.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle testing technology, and more specifically relates to a special vehicle three-electric joint testing system. Background Technology

[0002] The traditional process for matching and debugging special vehicles involves assembling all the wiring harnesses, vehicle control unit (VCU), battery management system (BMS), motor controller (MCU), and motors on the actual vehicle, and then jointly debugging the entire vehicle's power system. Although this process can match all the parameters of the power system, obtaining the specific matching parameters makes it impossible to accurately calculate the overall system efficiency. Therefore, it is necessary to use specialized dynamometers and power analyzers to accurately calculate the efficiency of the motor, the efficiency of the motor controller, and various parameters of the battery pack. Furthermore, the testing environment and test site on the actual vehicle have a significant impact on the test results, resulting in high testing risks and low efficiency. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a special vehicle three-electric integrated testing system, which improves testing efficiency and saves time.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a special vehicle three-electric joint testing system, including a vehicle controller, a battery management system, a motor controller, and a motor, and also including a testing device. The testing device includes a data acquisition system, a power analyzer, a dynamometer, a frequency converter, and a host computer. The dynamometer is connected to the motor spindle via a coupling. The frequency converter is connected to an external high-voltage power supply. The dynamometer is electrically connected to the frequency converter. The frequency converter is connected to the host computer via a communication bus. The battery management system is connected to the host computer via a CAN bus. The data acquisition system is connected to the power analyzer, and the power analyzer is connected to the host computer.

[0005] Furthermore, the acquisition system includes a voltage acquisition system, a current acquisition system, and a torque sensor. The voltage acquisition system acquires voltage data from the testing device, the current acquisition system acquires current data from the testing device, and the torque sensor is located on the coupling. The voltage acquisition system, the current acquisition system, and the torque sensor are all connected to a power analyzer.

[0006] Furthermore, the voltage acquisition system includes a voltage sensor located between the frequency converter and the high-voltage power supply, and the current acquisition system includes a current sensor located on the three-phase line of the dynamometer and a current sensor located between the frequency converter and the high-voltage power supply.

[0007] Furthermore, it also includes a water chiller, which is connected to the cooling pipes on the motor and the dynamometer via pipes.

[0008] Furthermore, the battery management system is connected to an external high-voltage power source to supply power to the vehicle controller, battery management system, motor controller, and motor.

[0009] Compared with the prior art, the beneficial effects of this utility model are: by assembling the vehicle control unit (VCU), battery management system (BMS), motor controller (MCU), and motor on a test bench and connecting them to the host computer via CAN bus and communication bus, the power system of the entire vehicle can be jointly debugged and matched. This is not limited by the test environment and site, and the test results are more accurate, which greatly improves the efficiency of the test work, saves time, and can also test different models of motors and control systems, shortening the development cycle of the overall power system. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structural system of this utility model;

[0011] Figure 2 This is a schematic diagram of a traditional three-electric testing system. Detailed Implementation

[0012] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0013] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0014] Reference Figure 1 and Figure 2 The present invention will be further described below.

[0015] A special vehicle three-electric integrated testing system includes a vehicle controller, a battery management system, a motor controller, and a motor. It also includes a testing device comprising a data acquisition system, a power analyzer, a dynamometer, a frequency converter, and a host computer. The dynamometer is connected to the motor spindle via a coupling. The frequency converter is connected to an external high-voltage power supply. The dynamometer is electrically connected to the frequency converter. The frequency converter is connected to the host computer via a communication bus. The battery management system is connected to the host computer via a CAN bus. The data acquisition system is connected to the power analyzer, and the power analyzer is connected to the host computer.

[0016] like Figure 1 As shown in the example, preferably, the acquisition system includes a voltage acquisition system, a current acquisition system, and a torque sensor. The voltage acquisition system acquires voltage data from the test device, the current acquisition system acquires current data from the test device, and the torque sensor is located on the coupling. The voltage acquisition system, the current acquisition system, and the torque sensor are all connected to a power analyzer.

[0017] like Figure 1 As shown in the example, the preferred embodiment of this example includes a voltage sensor located between the frequency converter and the high-voltage power supply, and a current acquisition system including a current sensor located on the three-phase line of the dynamometer and a current sensor located between the frequency converter and the high-voltage power supply. The detected voltage and current data are transmitted to the power analyzer.

[0018] like Figure 1 As shown, in this example, the preferred embodiment also includes a water chiller. The water chiller is connected to the cooling pipes on the motor and the dynamometer via pipes to dissipate heat from the high-power motor during testing. A water temperature sensor and a flow meter are installed on the water chiller and connected to a host computer.

[0019] Of course, air cooling can also be used for heat dissipation. If the tested motor power is small, no additional heat dissipation mechanism is required.

[0020] like Figure 1 As shown in this example, preferably, the battery management system is connected to an external high-voltage power supply to power the vehicle controller, battery management system, motor controller, and motor.

[0021] like Figure 1As shown, the vehicle control unit (VCU), battery management system (BMS), motor controller (MCU), and motor are assembled on a test bench and connected to a host computer via a CAN bus and other communication buses. Various information is transmitted to the host computer through the communication bus. Based on these parameters, the host computer calculates the efficiency value of the entire system and the actual power of the motor under test using software. All collected data and signals are recorded and saved in the host computer for easy retrieval and viewing, as well as for data processing and analysis. The system can also: 1. Input normal test parameters into the host computer according to the test plan requirements, such as the torque parameters to be loaded, the required speed parameters, and test condition information during the test process; 2. Modify and adjust test parameters during the test to obtain the parameter information for maximum efficiency; 3. Record and save test parameters during the test to ensure timely retrieval of operating parameters in case of faults, allowing relevant engineers to make timely corrections; 4. Save different motor models and voltage information according to the test plan requirements for future retrieval and viewing.

[0022] The entire testing system has the following functions:

[0023] 1. Obtain the basic status of the three electronic control systems: vehicle control unit (VCU), motor control unit (MCU), and battery management system (BMS), including information such as the state of charge (SOC) of the battery pack, whether the motor control system is normal, and whether the voltage and current of the entire system are normal.

[0024] 2. Input the normal parameters and other information to be tested according to the test plan requirements to ensure the system starts up normally;

[0025] 3. Obtain the test operation parameters of the vehicle controller, motor controller, and motor and battery management system, and determine whether the vehicle controller, motor controller, and motor and battery management system are operating normally and whether there are any fault codes;

[0026] 4. Obtain test and operation parameters for the vehicle controller, motor controller, and motor and battery management system. If any of these three system components malfunctions, promptly issue an alarm message to prompt the test personnel to stop the test.

[0027] 5. Obtain the test operation parameters of the vehicle controller, motor controller, and motor and battery management system, record and save the operation parameters of the three-electric system, compare them with the design values, and promptly alarm if the values ​​exceed the design values ​​during operation. At this time, the test personnel can send the recorded parameter files to relevant personnel for rectification.

[0028] This invention enables the joint debugging and matching of the vehicle's powertrain system without assembling the vehicle control unit (VCU), battery management system (BMS), motor controller (MCU), and motor on an actual vehicle. It can be conducted indoors, without being limited by the testing environment or site, resulting in more accurate test results. This greatly improves the efficiency of testing work, saves time, and allows for testing of different models of motors and control systems, thus shortening the overall powertrain development cycle.

[0029] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A special vehicle three-electricity combined test system, comprising a vehicle controller, a battery management system, a motor controller and a motor, characterized in that: The test device also comprises a collection system, a power analyzer, a dynamometer, a frequency converter and a host computer, the dynamometer is connected with the main shaft of the motor through a shaft coupling, the frequency converter is connected with an external high-voltage power supply, the dynamometer is electrically connected with the frequency converter, the frequency converter is connected with the host computer through a communication bus, the battery management system is connected with the host computer through a CAN bus, the collection system is connected with the power analyzer, and the power analyzer is connected with the host computer.

2. The special vehicle triad combined test system according to claim 1, characterized in that: The collection system comprises a voltage collection system, a current collection system and a torque sensor, the voltage collection system collects voltage data on the test device, the current collection system collects current data on the test device, and the torque sensor is located on the shaft coupling, and the voltage collection system, the current collection system and the torque sensor are all connected with the power analyzer.

3. The special vehicle triad combined test system according to claim 2, characterized in that: The voltage collection system comprises a voltage sensor located between the frequency converter and the high-voltage power supply, and the current collection system comprises a current sensor located on the three-phase line of the dynamometer and a current sensor located between the frequency converter and the high-voltage power supply.

4. The special vehicle triad combined test system according to claim 1, characterized in that: The water cooling machine is also provided, and the water cooling machine is connected with the cooling pipeline on the motor and the dynamometer through a pipeline.

5. The special vehicle triad combined test system according to claim 1, characterized in that: The battery management system is connected with an external high-voltage power supply to supply power for the vehicle control unit, the battery management system, the motor controller and the motor.

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