Vehicle simulation test system and electronic equipment

Abstract

The invention relates to a vehicle simulation test system and electronic equipment. The vehicle simulation test system comprises a first motor simulation module which outputs a simulation bus voltage to a motor controller based on a control signal of a battery controller, and the motor controller converts the simulation bus voltage into a three-phase alternating signal; and the second motor simulation module feeds back a plurality of signals output by the simulation motor to the motor controller according to the three-phase alternating signal.

Description

Technical Field

[0001] The present disclosure relates to the field of simulation testing, and in particular to a vehicle simulation testing system and electronic equipment. Background Art

[0002] With the rapid development of new energy vehicle technology, it is particularly important to test the vehicle's control system efficiently and safely. Traditional testing methods usually rely on actual physical equipment such as high-voltage batteries, motors, and dynamometers, which is not only costly but also poses certain safety risks. In addition, it is difficult to reproduce certain extreme working conditions and fault conditions in actual testing, which limits the comprehensiveness and accuracy of the test. Summary of the invention

[0003] In view of the above problems, the present disclosure aims to provide a vehicle simulation test system and electronic equipment.

[0004] The vehicle simulation test system of the first aspect of the present disclosure includes: a first motor simulation module, which outputs a simulated bus voltage to a motor controller based on a control signal of a battery controller, and the motor controller converts the simulated bus voltage into a three-phase alternating signal; and a second motor simulation module, which feeds back multiple signals output by the simulated motor to the motor controller based on the three-phase alternating signal.

[0005] According to some embodiments of the vehicle simulation test system of the present disclosure, optionally, the vehicle simulation test system also includes: a battery simulation module, which simulates multiple battery cells and a battery assembly, and provides a simulation signal of each battery cell and battery assembly to a battery controller, and the battery controller outputs a control signal based on the simulation signal.

[0006] According to the vehicle simulation test system of some embodiments of the present disclosure, optionally, the battery simulation module includes a plurality of simulated battery cell module groups, each simulated battery cell module group includes a plurality of single-cell simulation units composed of at least one resistor-capacitor circuit.

[0007] According to the vehicle simulation test system of some embodiments of the present disclosure, optionally, each simulated battery cell module group includes a plurality of single battery cell simulation units connected in series, and the plurality of simulated battery cell module groups are connected in parallel to perform voltage simulation on the battery assembly.

[0008] According to the vehicle simulation test system of some embodiments of the present disclosure, optionally, the motor controller changes the output three-phase alternating signal based on a plurality of signals output by the simulated motor in response to a vehicle acceleration or deceleration signal.

[0009] According to the vehicle simulation test system of some embodiments of the present disclosure, optionally, the multiple signals output by the simulated motor include at least one of the following: a motor rotor position sensor signal, and a three-phase alternating current signal output by the motor.

[0010] According to the vehicle simulation test system of some embodiments of the present disclosure, optionally, the first motor simulation module includes a hardware-in-the-loop HIL simulation system, and the second motor simulation module includes a field programmable gate array FPGA hardware-in-the-loop simulation board.

[0011] According to the vehicle simulation test system of some embodiments of the present disclosure, optionally, the second motor simulation module is further configured to simulate battery voltage changes according to a plurality of signals output by the simulated motor.

[0012] According to the vehicle simulation test system of some embodiments of the present disclosure, optionally, the three-phase alternating signal includes a pulse width modulation (PWM) signal.

[0013] An electronic device according to a second aspect of the present disclosure includes the vehicle simulation test system according to any one of the aforementioned embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 FIG. 1 is a block diagram of a vehicle simulation test system 100 according to some embodiments. DETAILED DESCRIPTION

[0015] The following describes some of the various embodiments of the present disclosure, which are intended to provide a basic understanding of the present disclosure, but are not intended to identify the key or decisive elements of the present disclosure or to limit the scope of protection.

[0016] For brevity and illustrative purposes, the principles of the present disclosure are described herein mainly with reference to its exemplary embodiments. However, those skilled in the art will readily recognize that the same principles are equally applicable to and can be implemented in all types of vehicle simulation test systems and electronic devices, and any such changes do not depart from the true spirit and scope of the present patent application.

[0017] Moreover, in the following description, reference is made to the accompanying drawings, which illustrate specific exemplary embodiments. Electrical, mechanical, logical and structural changes may be made to these embodiments without departing from the spirit and scope of the present disclosure. In addition, although the features of the present disclosure are disclosed in conjunction with only one of several implementations / embodiments, this feature may be combined with one or more other features of other implementations / embodiments as may be desired and / or advantageous for any given or identifiable function. Therefore, the following description should not be regarded as limiting, and the scope of the present disclosure is defined by the appended claims and their equivalents.

[0018] Terms such as “having” and “including” indicate that in addition to the units (modules) and steps directly and explicitly stated in the specification and claims, the technical solution of the present disclosure does not exclude the situation where it has other units (modules) and steps that are not directly or explicitly stated.

[0019] Figure 1 A module schematic diagram of a vehicle simulation test system 100 according to some embodiments is shown. The vehicle simulation test system 100 may include a first motor simulation module 110 and a second motor simulation module 120. The first motor simulation module 110 outputs a simulated bus voltage to a motor controller based on a control signal of a battery controller, and the motor controller converts the simulated bus voltage into a three-phase alternating signal. The second motor simulation module 120 feeds back multiple signals output by the simulated motor to the motor controller based on the three-phase alternating signal.

[0020] Specifically, combined Figure 1 , the battery controller can output a control signal (e.g., a high-voltage relay energizing signal generated based on the high-voltage battery being connected) to the first motor simulation module 110, thereby triggering the first motor simulation module 110 to provide a simulated bus voltage (e.g., a voltage of 1-5v) to the signal end of the motor controller, and the motor controller is powered on successfully based on the simulated bus voltage, and converts the simulated bus voltage into a three-phase alternating signal (e.g., a PWM wave) and provides it to the second motor simulation module 120. Then, the second motor simulation module 120 can simulate the power-on and operation of the motor and feed back a plurality of signals generated after the motor is running normally, and the second motor simulation module 120 can feed back these signals to the motor controller, thereby simulating the power-on and operation process of the motor and obtaining relevant parameter information of these processes for testing.

[0021] Therefore, the vehicle simulation test system disclosed in the present invention can test the motor control related functions without the need for real motors and dynamometers, such as whether the motor controller operates normally. Therefore, the hardware cost of the vehicle simulation test system is lower, the volume is smaller, the use is safer and more convenient, and the adjustment of parameters such as voltage and current is also faster and more accurate.

[0022] In some embodiments, the vehicle simulation test system 100 may further include a battery simulation module 130, which simulates multiple cells and a battery assembly, and provides a simulation signal of each cell and a battery assembly to the battery controller, and the battery controller outputs a control signal based on the simulation signal. The battery simulation module 130 may be composed of multiple single cell simulation units, each of which may be a circuit structure that simulates a real cell of the vehicle, so that the battery controller may use some sensors to obtain a series of parameters for a single or multiple single cell simulation units and a battery assembly, such as voltage, current, temperature, etc. The battery controller may detect and receive the simulated battery voltage signals provided by these single cell simulation units or battery assemblies, and based on the simulated battery voltage signals, perform some operations that are the same as the operations of the battery controller after the battery is connected in the real environment, such as issuing a control signal to the motor controller, issuing a high-voltage relay pickup signal, etc. Therefore, there is not only voltage collection for the single cell simulation unit, but also voltage collection for the battery assembly, which is also convenient for mutual verification of the accuracy of the voltages of the two and mutual fault testing.

[0023] Therefore, the vehicle simulation test system disclosed in the present invention can further reduce the need for high-voltage batteries without the need for real motors and dynamometers, and can use a battery simulation module composed of simulated multiple single-cell simulation units to complete the simulation of single or multiple cells or battery assemblies. The test system disclosed in the present invention integrates the testing and simulation of batteries and the testing and simulation of motors, so that the motor test and battery test of the vehicle do not need to be performed at a real high voltage (such as the voltage of the vehicle's high-voltage energy storage battery). This further improves the safety of the test system and further reduces hardware costs.

[0024] In some embodiments, the battery simulation module 130 may include multiple simulated battery cell module groups, each simulated battery cell module group includes multiple single-cell simulation units composed of at least one resistor-capacitor circuit. As a result, the vehicle simulation test system can perform a high degree of simulation on the real battery cell module group, and the resistor-capacitor RC circuit in each simulated battery cell module group can be adjusted according to the characteristics of the actual battery cell to ensure the accuracy and reliability of the simulation. For example, by adjusting the values ​​of resistance and capacitance, the behavior of the battery cell at different temperatures can be simulated. In addition, each simulated battery cell module group can also be equipped with a temperature sensor simulation circuit to generate a digital or analog temperature signal, which is sent to the battery controller via the CAN bus or other communication protocols to achieve accurate simulation of the temperature. By simulating the battery cell through a resistor-capacitor RC circuit and powering the RC circuit with a low-voltage power supply, the safety risks brought by the use of high-voltage batteries are avoided, and the safety of the test is improved.

[0025] In some embodiments, each simulated battery module group includes a plurality of single battery simulation units connected in series, and a plurality of simulated battery module groups are connected in parallel to simulate the voltage of the battery assembly. Specifically, each single battery simulation unit simulates the voltage and temperature characteristics of the actual battery cell through a resistor and capacitor (RC) circuit, and a plurality of battery simulation units can be connected in series to form a simulated battery module group (simulating a real battery module group), and the simulated battery module groups are connected in parallel with each other and can be powered by the same DC power supply. For example, assuming that the voltage of each battery cell is 3.15V, and each simulated battery module group is composed of 15 single battery simulation units connected in series, then the voltage of each simulated battery module group is 15×3.15V=47.25V. Then, by connecting 8 such simulated battery module groups in parallel, a battery assembly consisting of 120 single battery cells can be simulated, and the simulated battery simulation module 130 requires a power supply voltage of 47.25V, thereby using a lower voltage (47.25V) to achieve the simulation of a 378V high-voltage battery.

[0026] In some embodiments, the motor controller changes the output three-phase alternating signal based on multiple signals output by the simulated motor in response to the vehicle acceleration or deceleration signal. Specifically, when the accelerator pedal or brake pedal of the vehicle is operated, the motor controller receives the corresponding acceleration or deceleration signal. These signals are transmitted to the motor controller, for example, via an on-board bus (such as a CAN bus). After receiving the acceleration or deceleration signal, the motor controller adjusts the frequency of the three-phase alternating signal (such as a PWM wave) according to the current motor operating state (including motor speed and output torque). For example, when the vehicle accelerates, the motor controller increases the frequency of the PWM wave, thereby increasing the motor speed; when the vehicle decelerates, the motor controller reduces the frequency of the PWM wave, thereby slowing down the motor speed. This process is achieved by changing the duty cycle of the PWM wave, thereby accurately controlling the output power of the motor. The second motor simulation module 120 simulates the actual response of the motor based on the three-phase alternating PWM wave generated by the motor controller, and generates a three-phase AC current signal and a rotor position signal. These signals are fed back to the motor controller through the analog interface, so that the motor controller can monitor the operating state of the motor in real time and make corresponding adjustments. For example, the motor controller can obtain the precise position of the motor rotor through the rotor position sensor signal to ensure precise control of the motor.

[0027] In this way, by adjusting the frequency and duty cycle of the three-phase alternating PWM wave in real time, the motor controller can accurately control the motor speed and torque to ensure smooth acceleration and deceleration of the vehicle. By simulating the running state of the motor, the motor controller can detect various fault conditions, such as overcurrent and overheating, and take protective measures in time to improve the safety of the test system.

[0028] In some embodiments, the multiple signals output by the simulated motor include at least one of the following: a motor rotor position sensor signal, a three-phase alternating current signal output by the motor. Also, in some embodiments, the first motor simulation module includes a hardware-in-the-loop HIL simulation system, and the second motor simulation module includes a field programmable gate array FPGA hardware-in-the-loop simulation board.

[0029] Among them, the motor rotor position sensor signal is the FPGA hardware-in-the-loop simulation board that simulates the position change of the motor rotor according to the three-phase alternating PWM wave generated by the motor controller, and generates a rotor position sensor signal. These signals are usually digital signals and are transmitted to the motor controller through the CAN bus or other communication protocols. By receiving the rotor position sensor signal, the motor controller can accurately obtain the current position of the motor rotor, thereby achieving precise control of the motor speed and position. In addition, through the precise rotor position signal, the motor controller can adjust the frequency and duty cycle of the PWM wave in real time to ensure the stable operation of the motor under various working conditions and improve the response speed and control accuracy of the test system.

[0030] The three-phase alternating current signal output by the motor can be a three-phase current output (three-phase alternating current signal) generated by the FPGA hardware-in-the-loop simulation board based on the three-phase alternating PWM wave generated by the motor controller to simulate the motor. By receiving the three-phase alternating current signal, the motor controller can monitor the current state of the motor in real time, thereby adjusting the frequency and duty cycle of the PWM wave to ensure the output power and efficiency of the motor. Through the accurate three-phase alternating current signal, the motor controller can detect the motor's overcurrent, short circuit and other faults in time and take corresponding protection measures, which further improves the safety and reliability of the test system.

[0031] The hardware-in-the-loop (HIL) simulation system is mainly used to simulate the control signal of the battery controller and output the simulated bus voltage for the motor controller. The system generates models of the battery and motor through simulation software (such as MATLAB / Simulink) to simulate the dynamic behavior of the actual physical system. The HIL simulation system usually includes a high-performance processor board, an I / O board, and a communication interface. The processor board is responsible for running the simulation model, the I / O board is used to exchange signals with external devices (such as the battery controller and the motor controller), and the communication interface supports a variety of communication protocols (such as CAN, LIN, FlexRay, etc.). The HIL simulation system can accurately simulate the dynamic behavior of the battery and motor to ensure the accuracy and reliability of the simulation results. By adjusting the simulation model and parameters, the HIL simulation system can adapt to different types of batteries and motors and support a variety of test requirements. The HIL simulation system supports fault injection, which can simulate various fault conditions during the simulation process to verify the robustness and fault handling capabilities of the test system.

[0032] The FPGA hardware-in-the-loop simulation board is mainly used to simulate the rotor position sensor signal, three-phase alternating current signal and bus voltage signal of the motor. The board generates and processes these signals in real time and feeds them back to the motor controller to achieve precise control of the motor. The FPGA hardware-in-the-loop simulation board includes an FPGA chip, an analog signal processing circuit and a communication interface. The FPGA chip is responsible for generating and processing complex signals, the analog signal processing circuit is used for signal amplification and filtering, and the communication interface supports real-time communication with the motor controller. Through the FPGA board, the dynamic behavior of the motor can be accurately simulated, high-precision signals can be generated, and precise control of the motor controller can be ensured. In addition, the programmability of the FPGA board allows users to flexibly adjust simulation models and parameters according to different test requirements. In addition, the FPGA board can be seamlessly integrated with other hardware modules (such as the HIL simulation system) to form a complete simulation test platform, and has a fast response capability of microseconds, which can generate and process these signals in real time to ensure the real-time and reliability of the test system.

[0033] The first motor simulation module 110 and the second motor simulation module 120 together realize efficient simulation of the motor and the battery. The HIL simulation system is responsible for generating and managing complex simulation models, and the FPGA hardware-in-the-loop simulation board is responsible for generating and processing the response signals of the motor in real time. This combination not only improves the accuracy and real-time performance of the simulation, but also enhances the flexibility and reliability of the system, ensuring comprehensive testing and verification of the vehicle's new energy drive system.

[0034] In some embodiments, the second motor simulation module 120 is also configured to simulate battery voltage changes according to multiple signals output by the simulated motor. Specifically, the second motor simulation module 120 can generate corresponding motor battery voltage change signals by real-time monitoring and processing the running state of the motor to reflect the actual performance of the battery under different working conditions. For example, the second motor simulation module 120 monitors the running state of the motor in real time, including motor rotor position sensor signals, three-phase alternating current signals, etc. These signals are generated by the FPGA hardware-in-the-loop simulation board and fed back to the motor controller. The FPGA hardware-in-the-loop simulation board calculates the battery consumption current and voltage changes based on the received motor running state signals. These calculations are based on parameters such as motor speed, torque and current, and can reflect the actual performance of the battery under different working conditions. Then, based on the calculation results, the FPGA hardware-in-the-loop simulation board generates corresponding battery voltage change signals. These signals are sent to the battery controller through an analog interface or a digital communication protocol (such as a CAN bus), and the generated battery voltage change signal can be an analog signal or a digital signal, depending on the interface type of the battery controller. Analog signals are usually 0-5V or 4-20mA voltage or current signals, while digital signals are transmitted through communication protocols.

[0035] By simulating the battery voltage change, the battery controller can obtain the status of the battery under different working conditions in real time, ensuring that the test system can be accurately adjusted according to the actual battery status. For example, the second motor simulation module 120 can simulate the voltage changes of the battery under various dynamic conditions such as acceleration, deceleration, and climbing, ensuring the comprehensiveness and accuracy of the simulation system. For another example, by simulating the battery voltage change, the battery over-discharge, over-charge and other fault conditions can be detected, and protective measures can be taken in time to improve the safety and reliability of the system. Through the simulation system, the high cost of using actual batteries and motors is avoided, while shortening the test time and resource investment.

[0036] In addition, during the fault injection test, the battery simulation module 130 can verify the fault detection and protection functions of the battery controller by simulating abnormal changes in the battery voltage, thereby ensuring the robustness and safety of the system.

[0037] Through the above design, the second motor simulation module can not only generate and process the motor's operating status signal, but also simulate the change of battery voltage, provide accurate feedback information for the battery controller, and ensure efficient control and stable operation of the vehicle's new energy drive system.

[0038] In some embodiments, the three-phase alternating signal includes a pulse width modulation PWM signal. The motor controller generates a three-phase alternating PWM signal according to the received bus voltage signal and the acceleration or deceleration signal of the vehicle. The three-phase alternating PWM signal includes three independent PWM signals, which respectively control the three phase windings of the motor. The frequency and duty cycle of each PWM signal can be adjusted in real time according to the operating state of the motor. These signals start, run and stop the motor by controlling the three-phase windings of the motor. By changing the duty cycle of the PWM signal, the motor controller can accurately control the speed and torque of the motor to ensure the efficient operation of the motor under various working conditions. Moreover, the PWM signal has a fast response capability and can adjust the output power of the motor in real time to improve the dynamic response speed of the system. Moreover, the PWM signal can achieve efficient power conversion, reduce energy loss, and improve the overall efficiency of the system. In addition, by monitoring the waveform and parameters of the PWM signal, faults such as overcurrent and short circuit of the motor can be detected, and protective measures can be taken in time to improve the safety and reliability of the system.

[0039] According to another aspect of the present disclosure, an electronic device is also provided, which includes a vehicle simulation test system 100 according to any of the aforementioned embodiments. Specifically, this electronic device refers to an integrated hardware and software component of the vehicle simulation test system 100, which is used to simulate and test the control system of a new energy vehicle in a laboratory environment. The electronic device can have a variety of forms, including but not limited to the following: a test bench, such as a fixed-mounted device, which generally includes a mechanical structure, an electrical system, and a control system, and is used to simulate and test various components of a new energy vehicle; a portable test device that can be easily carried and moved, suitable for field testing and rapid verification; a computer; an embedded system, and the like.

[0040] The above mainly describes the vehicle simulation test system and electronic equipment of the present disclosure. Although only some of the specific embodiments of the present disclosure are described, it should be understood by those skilled in the art that the present disclosure can be implemented in many other forms without departing from its subject matter and scope. Therefore, the examples and embodiments shown are regarded as illustrative rather than restrictive, and the present disclosure may cover various modifications and substitutions without departing from the spirit and scope of the present disclosure as defined in the attached claims.

Claims

1. A vehicle simulation test system, characterized in that: The vehicle simulation test system comprises: A first motor simulation module, which outputs a simulated bus voltage to a motor controller based on a control signal of a battery controller, and the motor controller converts the simulated bus voltage into a three-phase alternating signal; and The second motor simulation module feeds back a plurality of signals output by the simulated motor to the motor controller according to the three-phase alternating signal.

2. The vehicle simulation test system according to claim 1, characterized in that: The vehicle simulation test system also includes: A battery simulation module simulates a plurality of battery cells and a battery assembly and provides a battery controller with a simulation signal of each battery cell and the battery assembly, and the battery controller outputs the control signal based on the simulation signal.

3. The vehicle simulation test system according to claim 2, characterized in that: The battery simulation module includes a plurality of simulated battery cell module groups, and each simulated battery cell module group includes a plurality of single-cell simulation units composed of at least one resistor-capacitor circuit.

4. The vehicle simulation test system according to claim 3, characterized in that: Each of the simulated battery cell module groups includes a plurality of the single battery cell simulation units connected in series, and the plurality of simulated battery cell module groups are connected in parallel to perform voltage simulation on the battery assembly.

5. The vehicle simulation test system according to claim 1, characterized in that: The motor controller changes the output three-phase alternating signal based on a plurality of signals output by the simulated motor in response to a vehicle acceleration or deceleration signal.

6. The vehicle simulation test system according to claim 1, characterized in that: The plurality of signals output by the simulated motor include at least one of the following: a motor rotor position sensor signal and a three-phase alternating current signal output by the motor.

7. The vehicle simulation test system according to claim 1, characterized in that: The first motor simulation module includes a hardware-in-the-loop HIL simulation system, and the second motor simulation module includes a field programmable gate array FPGA hardware-in-the-loop simulation board.

8. The vehicle simulation test system according to claim 1, characterized in that: The second motor simulation module is further configured to simulate battery voltage variation according to a plurality of signals output by the simulated motor.

9. The vehicle simulation test system according to claim 1, characterized in that: The three-phase alternating signal includes a pulse width modulation PWM signal.

10. An electronic device, characterized in that: The electronic device comprises a vehicle simulation test system according to any one of claims 1-9.

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