A vehicle power domain control system, method, storage medium, and computer device

Abstract

The present application discloses a vehicle power domain control system and method, a storage medium, and a computer device. The method includes: a power management chip, a resolver decoding chip, a main control chip, and a peripheral control chip; the power management chip is used to supply power to the main control chip and the peripheral control chip; the resolver decoding chip is used to generate a rotor position signal and input the rotor position signal to the peripheral control chip; the main control chip is used to process the received first signal, and when the first signal is a vehicle drive control signal, calculate a motor torque demand value corresponding to the first signal, and the main control chip communicates with a controller outside the vehicle power domain control system through the CAN bus; the peripheral control chip is used to collect the motor torque demand value and generate a second signal based on the motor torque demand value and the rotor position signal.

Description

Technical Field

[0001] This application relates to the technical field of vehicle power control, and in particular to a vehicle power domain control system and method, a storage medium, and a computer device. Background Art

[0002] With the continuous aggravation of environmental pollution, new energy mining vehicles have emerged as the times require. Generally speaking, new energy mining vehicles often include multiple controllers, such as: engine controller, transmission controller, motor controller, battery management controller, and vehicle controller, etc. The control structure of existing new energy mining vehicles is a distributed control structure. Under this control structure, multiple controllers are designed and installed in a distributed manner, which not only has a high cost in terms of wiring harnesses and controllers, but also has a complex installation and is not conducive to later maintenance. Summary of the Invention

[0003] In view of this, this application provides a vehicle power domain control system and method, a storage medium, and a computer device, which is beneficial to reducing the environmental interference problems existing between different controllers. At the same time, compared with the traditional distributed control structure, it effectively reduces the costs of wiring harnesses and controllers, and is convenient for subsequent maintenance and unified upgrade.

[0004] According to one aspect of this application, a vehicle power domain control system is provided. The system includes:

[0005] A power management chip, a resolver decoding chip, a main control chip, and a peripheral control chip;

[0006] The power management chip is connected to the main control chip and the peripheral control chip, and the power management chip is used to supply power to the main control chip and the peripheral control chip;

[0007] The resolver decoding chip is connected to the peripheral control chip, and the resolver decoding chip is used to generate a rotor position signal and input the rotor position signal to the peripheral control chip;

[0008] The main control chip is connected to the peripheral control chip and the CAN bus. The main control chip is used to process the received first signal, and when the first signal is a vehicle driving control signal, calculate the motor torque demand value corresponding to the first signal. The main control chip communicates with the controller outside the vehicle power domain control system through the CAN bus, where the vehicle driving control signal includes an accelerator pedal signal, a shift demand signal, a brake pedal signal, and a vehicle constant speed cruise signal;

[0009] The peripheral control chip is connected to the main control chip. The peripheral control chip is used to collect the motor torque demand value and generate a second signal based on the motor torque demand value and the rotor position signal.

[0010] Optionally, the main control chip includes a key signal interface, a fast charge demand signal interface, a charge demand signal interface, an accelerator pedal signal interface, a shift demand signal interface, a brake pedal signal interface, a crash signal interface, a vehicle cruise control signal interface, and a temperature signal interface;

[0011] The main control chip is used to receive a key signal through the key signal interface and control the vehicle's overall startup through the key signal; the main control chip is also used to receive a fast charge demand signal through the fast charge demand signal interface and control the vehicle to enter the fast charge mode through the fast charge demand signal; the main control chip is also used to receive a charge demand signal through the charge demand signal interface and control the vehicle to enter the normal charge mode through the charge demand signal; the main control chip is also used to receive an accelerator pedal signal through the accelerator pedal signal interface and control the vehicle to enter the speed change mode through the accelerator pedal signal; the main control chip is also used to receive a shift demand signal through the shift demand signal interface and control the vehicle to enter the shift mode through the shift demand signal; the main control chip is also used to receive a brake pedal signal through the brake pedal signal interface and control the vehicle to brake through the brake pedal signal; the main control chip is also used to receive a crash signal through the crash signal interface and control the vehicle to enter the fault detection and analysis mode through the crash signal; the main control chip is also used to receive a vehicle cruise control signal through the vehicle cruise control signal interface and control the vehicle to enter the uniform motion mode through the vehicle cruise control signal; the main control chip is also used to receive a temperature signal through the temperature signal interface and process the temperature signal for temperature display.

[0012] Optionally, the main control chip further includes a high-side drive signal output interface, a low-side drive signal output interface, and a first pulse width modulation signal output interface;

[0013] The high-side drive signal output interface is used to output a high-side drive signal and control the on / off state of the high-side switch;

[0014] The low-side drive signal output interface is used to output a low-side drive signal and control the on / off state of the low-side switch;

[0015] The first pulse width modulation signal output interface is used to output a modulated single-channel drive signal.

[0016] Optionally, the main control chip and the peripheral control chip each include an SPI communication interface, and the main control chip and the peripheral control chip communicate through the SPI communication interface.

[0017] Optionally, the peripheral control chip further includes a current input interface, a voltage input interface, and a second pulse width modulation signal output interface;

[0018] The current input interface is used to receive the current of the three-phase line of the target motor;

[0019] The voltage input interface is used to receive the voltage of the bus of the target motor;

[0020] The second pulse width modulation signal output interface is used to output the second signal so that the target motor outputs different torques.

[0021] According to another aspect of the present application, a vehicle power domain control method is provided, and the method includes:

[0022] Receiving the first signal through the main control chip, wherein the first signal includes a vehicle drive control signal;

[0023] When the first signal is the vehicle drive control signal, calculating, by the main control chip, a motor torque demand value corresponding to the first signal, collecting, by the peripheral control chip, the motor torque demand value, and generating, based on the motor torque demand value, the second signal, wherein the second signal is used to control the target motor to output different torques;

[0024] When the first signal is not the vehicle drive control signal, processing, by the main control chip, the first signal to generate a vehicle accessory signal, wherein the vehicle accessory signal includes the high-side drive signal, the low-side drive signal, and the single-channel drive signal.

[0025] Optionally, the generating the second signal based on the motor torque demand value specifically includes:

[0026] Obtaining, by the resolver decoding chip, the rotor position signal of the target motor, and determining, based on the motor torque demand value and the rotor position signal, the excitation current and torque current corresponding to the target motor, and further generating the second signal.

[0027] Optionally, after receiving the first signal through the main control chip, the method further includes:

[0028] Determining whether the first signal is a preset verification signal;

[0029] When the first signal is a preset verification signal, the main control chip and the peripheral control chip respectively process the first signal, and compare the processing results. When the comparison difference value is greater than the preset difference threshold, a verification problem signal is output.

[0030] According to another aspect of the present application, there is provided a storage medium, on which a computer program is stored, and when the program is executed by a processor, the above-mentioned vehicle power domain control method is implemented.

[0031] According to still another aspect of the present application, there is provided a computer device, including a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor. When the processor executes the program, the above-mentioned vehicle power domain control method is implemented.

[0032] By means of the above technical solution, a vehicle power domain control system and method, a storage medium, and a computer device provided by the present application. The system includes a power management chip, a resolver decoding chip, a main control chip, and a peripheral control chip. The power management chip can supply power to the main control chip and the peripheral control chip. The resolver decoding chip can transmit the rotor position signal to the peripheral control chip. The main control chip can receive different first signals through the interface and perform corresponding processing on the first signals. When the first signal is a vehicle drive control signal, the main control chip can calculate the motor torque demand value corresponding to the first signal. In addition, the main control chip can communicate with other controllers outside the vehicle power domain control system through the CAN bus. The peripheral control chip can collect the motor torque demand value calculated by the main control chip, and further generate a corresponding second signal through the motor torque demand value and the rotor position signal sent by the rotation decoding chip. By separately completing the calculation related to vehicle torque vector control with the peripheral control chip, the present application is beneficial to ensuring the calculation speed, reducing the operation pressure of the main control chip, and at the same time integrating the functions of the motor controller and the vehicle controller in the past to form a new vehicle power domain control system, which is beneficial to reducing the environmental interference problem existing between different controllers. At the same time, compared with the traditional distributed control structure, the cost of wiring harnesses and controllers is effectively reduced, which is convenient for subsequent maintenance and unified upgrade.

[0033] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features, and advantages of the present application more obvious and understandable, the following specifically illustrates the specific embodiments of the present application. Description of the Drawings

[0034] The accompanying drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0035] Figure 1 shows a schematic structural diagram of a vehicle power domain control system provided by an embodiment of the present application;

[0036] Figure 2 shows a schematic flow diagram of a vehicle power domain control method provided by an embodiment of the present application. Detailed implementation manners

[0037] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0038] In this embodiment, a vehicle power domain control system is provided, as Figure 1 shown, the system includes:

[0039] a power management chip, a resolver decoding chip, a main control chip, and a peripheral control chip;

[0040] The power management chip is connected to the main control chip and the peripheral control chip, and the power management chip is used to supply power to the main control chip and the peripheral control chip;

[0041] The resolver decoding chip is connected to the peripheral control chip, and the resolver decoding chip is used to generate a rotor position signal and input the rotor position signal into the peripheral control chip;

[0042] The main control chip is connected to the peripheral control chip and the CAN bus. The main control chip is used to process the received first signal, and when the first signal is a vehicle drive control signal, calculate the motor torque demand value corresponding to the first signal. The main control chip communicates with a controller outside the vehicle power domain control system through the CAN bus, where the vehicle drive control signal includes an accelerator pedal signal, a shift demand signal, a brake pedal signal, and a vehicle constant speed cruise signal;

[0043] The peripheral control chip is connected to the main control chip, and the peripheral control chip is used to collect the motor torque demand value and generate a second signal based on the motor torque demand value and the rotor position signal.

[0044] The vehicle power domain control system provided by this application can be applied to household new energy vehicles or large vehicles such as new energy mining trucks. The vehicle power domain control system of this application mainly includes a power management chip, a resolver decoding chip, a main control chip, and a peripheral control chip. Among them, the power management chip can be connected to the main control chip and the peripheral control chip. After connection, it can supply power to the main control chip and the peripheral control chip to ensure the normal operation of the main control chip and the peripheral control chip. The resolver decoding chip can be connected to the peripheral control chip. After connection, it can transmit the rotor position signal to the peripheral control chip. Here, the resolver decoding chip can specifically be a position sensor, which can monitor the angular position of the rotor in real time and generate a rotor position signal to be transmitted to the peripheral control chip so that the peripheral control chip can perform operations related to vector control based on the received rotor position signal subsequently. The main control chip can be connected to the peripheral control chip and the CAN bus. The main control chip can receive different first signals through an interface and process the first signals accordingly. The first signals can include an accelerator pedal signal, a key signal, a charging demand signal, etc. The main control chip can be an MPC5744P chip. When the first signal is a vehicle drive control signal, the main control chip can calculate the motor torque demand value corresponding to the first signal so that subsequently the peripheral control chip can perform calculations related to vector control based on the motor torque demand value and generate a corresponding second signal to drive the vehicle. Among them, the vehicle drive control signal can include an accelerator pedal signal, a shift demand signal, a brake pedal signal, and a vehicle constant speed cruise signal, etc. In addition, the main control chip can communicate with other controllers outside the vehicle power domain control system through the CAN bus, such as a transmission controller, an engine controller, etc. The peripheral control chip can be connected to the main control chip. The peripheral control chip can collect the motor torque demand value calculated by the main control chip and further generate a corresponding second signal through the motor torque demand value and the rotor position signal sent by the rotation decoding chip to control the target motor to output the required torque. Among them, the peripheral control chip can be a TMC4671 chip, and the acquisition period for setting the motor torque demand value can be 100 us, so as to ensure the rapid control of the target motor.

[0045] By applying the technical solution of this embodiment, a vehicle power domain control system is provided. The system includes a power management chip, a resolver decoding chip, a main control chip, and a peripheral control chip. The power management chip can supply power to the main control chip and the peripheral control chip. The resolver decoding chip can transmit the rotor position signal to the peripheral control chip. The main control chip can receive different first signals through an interface and perform corresponding processing on the first signals. When the first signal is a vehicle drive control signal, the main control chip can calculate the motor torque demand value corresponding to the first signal. In addition, the main control chip can communicate with other controllers outside the vehicle power domain control system through the CAN bus. The peripheral control chip can collect the motor torque demand value calculated by the main control chip and further generate a corresponding second signal based on the motor torque demand value and the rotor position signal sent by the rotation decoding chip. In this application, the calculation related to vehicle torque vector control is completed separately by the peripheral control chip, which is beneficial to ensuring the calculation speed and reducing the operation pressure of the main control chip. At the same time, the functions of the motor controller and the vehicle controller in the previous vehicle are integrated to form a new vehicle power domain control system, which is beneficial to reducing the environmental interference problem existing between different controllers. At the same time, compared with the traditional distributed control structure, the cost of wiring harnesses and controllers is effectively reduced, which is convenient for subsequent maintenance and unified upgrade.

[0046] In the above embodiments of the present application, optionally, the main control chip includes a key signal interface, a fast charging demand signal interface, a charging demand signal interface, an accelerator pedal signal interface, a gear shifting demand signal interface, a brake pedal signal interface, a collision signal interface, a vehicle constant speed cruise signal interface, and a temperature signal interface; the main control chip is configured to receive a key signal through the key signal interface and control the vehicle to start up through the key signal; the main control chip is further configured to receive a fast charging demand signal through the fast charging demand signal interface and control the vehicle to enter a fast charging mode through the fast charging demand signal; the main control chip is further configured to receive a charging demand signal through the charging demand signal interface and control the vehicle to enter a normal charging mode through the charging demand signal; the main control chip is further configured to receive an accelerator pedal signal through the accelerator pedal signal interface and control the vehicle to enter a speed change mode through the accelerator pedal signal; the main control chip is further configured to receive a gear shifting demand signal through the gear shifting demand signal interface and control the vehicle to enter a gear shifting mode through the gear shifting demand signal; the main control chip is further configured to receive a brake pedal signal through the brake pedal signal interface and control the vehicle to brake through the brake pedal signal; the main control chip is further configured to receive a collision signal through the collision signal interface and control the vehicle to enter a fault detection and analysis mode through the collision signal; the main control chip is further configured to receive a vehicle constant speed cruise signal through the vehicle constant speed cruise signal interface and control the vehicle to enter a uniform motion mode through the vehicle constant speed cruise signal; the main control chip is further configured to receive a temperature signal through the temperature signal interface and process the temperature signal for temperature display.

[0047] In this embodiment, the main control chip includes a plurality of different interfaces for receiving a first signal, such as a key signal interface, a fast charging demand signal interface, a charging demand signal interface, an accelerator pedal signal interface, a gear shifting demand signal interface, a brake pedal signal interface, a collision signal interface, a vehicle constant speed cruise signal interface, and a temperature signal interface. Different interfaces are used to receive different first signals, and the first signal can specifically be a signal corresponding to each interface one by one. By including different interfaces in the main control chip of the present application, different signals can be effectively integrated and processed on the same chip, which is beneficial to cost reduction on the basis of improving the integration level.

[0048] In the above embodiments of the present application, optionally, the main control chip further includes a high-side drive signal output interface, a low-side drive signal output interface, and a first pulse-width modulation signal output interface; the high-side drive signal output interface is used to output a high-side drive signal and control the on / off state of the high-side switch; the low-side drive signal output interface is used to output a low-side drive signal and control the on / off state of the low-side switch; the first pulse-width modulation signal output interface is used to output a modulated single-channel drive signal.

[0049] In this embodiment, the main control chip may further include a high-side drive signal output interface, a low-side drive signal output interface, and a first pulse-width modulation signal output interface, and some accessory functions of the vehicle are implemented through these interfaces. For example, the lifting and lowering of vehicle windows, the opening and closing of vehicle turn signals, the prompt for vehicle reversing, etc. Among them, the high-side drive signal output interface can output a high-side drive signal and at the same time control the on / off state of the high-side switch, the low-side drive signal output interface can output a low-side drive signal and control the on / off state of the low-side switch, and the first pulse-width modulation signal output interface can output a modulated single-channel drive signal. For example, the low-side drive signal can be used to adjust the direction of vehicle headlights when the vehicle is turning to reduce the blind area of the vehicle. The single-channel drive signal output by the first pulse-width modulation signal output interface is usually in a standby state, providing conditions for the realization of new functions of vehicle accessories.

[0050] In the above embodiments of the present application, optionally, the main control chip and the peripheral control chip each include an SPI communication interface, and the main control chip and the peripheral control chip communicate through the SPI communication interface.

[0051] In this embodiment, the main control chip and the peripheral control chip may each further include an SPI communication interface to enable communication between the main control chip and the peripheral control chip. For example, to transmit the motor torque demand value calculated by the main control chip. In addition, the main control chip and the peripheral control chip can also transmit some key signals through the SPI communication interface, and then realize the mutual verification of key signals, improving the accuracy of the output signals. For example, when the main control chip receives a fault signal, it can transmit the fault signal to the peripheral control chip through the SPI communication interface. The two chips process the signal at the same time and compare the processed signals, reducing the probability of final false fault reports and improving the safety of the vehicle.

[0052] In the above embodiments of the present application, optionally, the peripheral control chip further includes a current input interface, a voltage input interface, and a second pulse width modulation signal output interface; the current input interface is used to receive the current of the three-phase lines of the target motor; the voltage input interface is used to receive the voltage of the bus of the target motor; the second pulse width modulation signal output interface is used to output the second signal so that the target motor outputs different torques.

[0053] In this embodiment, the peripheral control chip may further include a current input interface, a voltage input interface, and a second pulse width modulation signal output interface. Among them, the current input interface and the voltage input interface are respectively used to receive the current of the three-phase lines of the target motor and the voltage of the bus of the target motor, and the second pulse width modulation signal output interface can output the generated second signal, so that the target motor can output different torques according to the second signal, thereby controlling the driving state of the vehicle.

[0054] Further, an embodiment of the present application provides a vehicle power domain control method, as Figure 2 shown, the system includes:

[0055] Step 101, receiving the first signal through the main control chip, where the first signal includes a vehicle drive control signal;

[0056] Step 102, when the first signal is the vehicle drive control signal, calculating, through the main control chip, a motor torque demand value corresponding to the first signal, and collecting, through the peripheral control chip, the motor torque demand value, and generating the second signal according to the motor torque demand value, where the second signal is used to control the target motor to output different torques;

[0057] Step 103, when the first signal is not the vehicle drive control signal, processing, through the main control chip, the first signal to generate a vehicle accessory signal, where the vehicle accessory signal includes the high-side drive signal, the low-side drive signal, and the single-channel drive signal.

[0058] The vehicle power domain control method provided by the embodiments of this application can be applied to the vehicle power domain control system described above. Different first signals are received through different interfaces of the main control chip. The first signals can include a key signal interface, a fast charging demand signal interface, a charging demand signal interface, an accelerator pedal signal interface, a shift demand signal interface, a brake pedal signal interface, a crash signal interface, a vehicle cruise control signal interface, and a temperature signal interface, etc. Among them, the accelerator pedal signal, the shift demand signal, the brake pedal signal, and the vehicle cruise control signal can be called vehicle drive control signals. When the first signal is a vehicle drive control signal, it indicates that the driver needs to adjust the vehicle speed. At this time, it is necessary to control the output torque of the corresponding target motor. The motor torque demand value corresponding to the vehicle drive control signal can be calculated by the main control chip. The external control chip can collect the motor torque demand value calculated by the main control chip through a preset communication interface according to a preset acquisition period. The preset communication interface can specifically be an SPI communication interface, and further arithmetic processing is performed according to the collected motor torque demand value to generate a corresponding second signal. Furthermore, the output torque of the target motor is controlled according to the second signal, thereby controlling the vehicle speed. The peripheral control chip can be a TMC4671 chip, and the acquisition period for the motor torque demand value can be set to 100 us, so as to ensure the fast control of the target motor. When the first signal is not a vehicle drive control signal, the first signal received is directly processed by the main control chip to generate vehicle accessory signals such as a high-side drive signal, a low-side drive signal, and a single-channel drive signal. For some signals with relatively low requirements for processing timeliness, the processing period of the main control chip for these signals can be set to 1 ms or 10 ms. However, the processing of the motor torque demand value requires a shorter period, that is, it is processed once. Therefore, the relevant calculations related to vector control are responsible for by the external control chip, which can effectively reduce the operation pressure of the main control chip, is beneficial to ensuring the speed of vector control-related calculations, and at the same time integrates the functions of the motor controller and the vehicle controller of the previous vehicle to form a new vehicle power domain control system, which is beneficial to reducing the environmental interference problems existing between different controllers. At the same time, compared with the traditional distributed control structure, the cost of wiring harnesses and controllers is effectively reduced, which is convenient for subsequent maintenance and unified upgrade.

[0059] In the above embodiment of this application, optionally, the "generating the second signal according to the motor torque demand value" in step 102 specifically includes: obtaining the rotor position signal of the target motor through the resolver decoding chip, and determining the excitation current and torque current corresponding to the target motor based on the motor torque demand value and the rotor position signal, and then generating the second signal.

[0060] In this embodiment, the rotor position signal of the target motor can be obtained through a resolver decoding chip. The real-time position of the rotor can be determined from the rotor position signal. Based on the motor torque demand value and the rotor position signal, the excitation current and torque current corresponding to the target motor are determined through vector control operations, and finally a second signal is output to drive the target motor to rotate.

[0061] In the above embodiment of the present application, optionally, after the step of "receiving the first signal through the main control chip" in step 101, the method further includes: determining whether the first signal is a preset verification signal; when the first signal is a preset verification signal, the main control chip and the peripheral control chip respectively process the first signal, and compare the processing results. When the comparison difference value is greater than a preset difference threshold, a verification problem signal is output.

[0062] In this embodiment, after the main control chip receives the first signal, it can also determine whether the first signal is a preset verification signal. Among them, the preset verification signal can be a vehicle fault signal, a temperature signal, etc. When the received first signal is a preset verification signal, the peripheral control chip can receive the first signal sent by the main control chip. The main control chip and the peripheral control chip respectively perform corresponding processing on the first signal to be verified, and compare the processing results. If the comparison result shows that the comparison difference value is less than or equal to the preset difference threshold, it means that the processing result is correct and can be directly output; if the comparison result shows that the comparison difference value is greater than the preset difference threshold, it means that there is an error in the processing result of the main control chip or the peripheral control chip, and a verification problem signal is output to avoid outputting and using incorrect signals. In the present application, by setting the key signal as a preset verification signal and mutually verifying through the main control chip and the peripheral control chip, a redundant design is completed in the aspect of key signal processing, improving the safety of key signal processing and reducing the false alarm rate.

[0063] Based on the above as Figure 2 shown method, correspondingly, an embodiment of the present application further provides a storage medium, on which a computer program is stored. When the computer program is executed by a processor, the vehicle power domain control method as Figure 2 shown above is implemented.

[0064] Based on such an understanding, the technical solution of the present application can be embodied in the form of a software product. The software product can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in various implementation scenarios of the present application.

[0065] Based on the above as Figure 2The method shown above. To achieve the above object, an embodiment of the present application further provides a computer device, which may specifically be a personal computer, a server, a network device, etc. The computer device includes a storage medium and a processor; the storage medium is used to store a computer program; the processor is used to execute the computer program to implement the above-mentioned Figure 2 vehicle power domain control method shown above.

[0066] Optionally, the computer device may further include a user interface, a network interface, a camera, a radio frequency (RF) circuit, sensors, an audio circuit, a WI-FI module, etc. The user interface may include a display screen (Display), an input unit such as a keyboard (Keyboard), etc. Optionally, the user interface may further include a USB interface, a card reader interface, etc. The network interface may optionally include a standard wired interface, a wireless interface (such as a Bluetooth interface, a WI-FI interface), etc.

[0067] Those skilled in the art can understand that the structure of a computer device provided in this embodiment does not constitute a limitation on the computer device, and it may include more or fewer components, or combine certain components, or have different component arrangements.

[0068] The storage medium may further include an operating system and a network communication module. The operating system is a program for managing and storing the hardware and software resources of the computer device, and supports the operation of information processing programs and other software and / or programs. The network communication module is used to implement communication between components inside the storage medium, and communication between other hardware and software in this entity device.

[0069] Those skilled in the art can understand that the drawings are only schematic diagrams of a preferred implementation scenario, and the modules or processes in the drawings are not necessarily essential for implementing the present application. Those skilled in the art can understand that the modules in the device in the implementation scenario can be distributed in the device in the implementation scenario according to the description of the implementation scenario, or can be correspondingly changed and located in one or more devices different from this implementation scenario. The modules in the above implementation scenario can be combined into one module, or further split into multiple sub-modules.

[0070] The above serial numbers of the present application are only for description and do not represent the advantages or disadvantages of the implementation scenarios. The above disclosure is only several specific implementation scenarios of the present application. However, the present application is not limited thereto, and any changes that can be thought of by those skilled in the art should fall within the protection scope of the present application.

Claims

1. A vehicle power domain control system, characterized in that, The system includes: a power management chip, a resolver decoding chip, a main control chip, and a peripheral control chip; The power management chip is connected to the main control chip and the peripheral control chip, and the power management chip is used to supply power to the main control chip and the peripheral control chip; The resolver decoding chip is connected to the peripheral control chip, and the resolver decoding chip is used to generate a rotor position signal and input the rotor position signal to the peripheral control chip; The main control chip is connected to the peripheral control chip and the CAN bus, and the main control chip is used to process the received first signal; When the first signal is a vehicle drive control signal, the main control chip calculates a motor torque demand value corresponding to the first signal, and the main control chip communicates with a controller outside the vehicle power domain control system through the CAN bus. Among them, the vehicle drive control signal includes an accelerator pedal signal, a shift demand signal, a brake pedal signal, and a vehicle constant speed cruise signal; The peripheral control chip is connected to the main control chip, and the peripheral control chip is used to collect the motor torque demand value and generate a second signal based on the motor torque demand value and the rotor position signal; When the first signal is not the vehicle drive control signal, the main control chip processes the first signal to generate a vehicle accessory signal, where the vehicle accessory signal includes the high-side drive signal, the low-side drive signal, and the single-channel drive signal; The main control chip is further configured to, after receiving the first signal, determine whether the first signal is a preset verification signal; when the first signal is a preset verification signal, process the first signal; The peripheral control chip is further configured to process the first signal when the first signal is a preset verification signal; The main control chip is further configured to compare the processing result of the main control chip with the processing result of the peripheral control chip, and when the comparison difference value is greater than a preset difference threshold, output a verification problem signal.

2. The system according to claim 1, wherein The main control chip includes a key signal interface, a fast charge demand signal interface, a charge demand signal interface, an accelerator pedal signal interface, a shift demand signal interface, a brake pedal signal interface, a crash signal interface, a vehicle constant speed cruise signal interface, and a temperature signal interface; The main control chip is used to receive a key signal through the key signal interface and control the vehicle's overall startup through the key signal; the main control chip is also used to receive a fast charging demand signal through the fast charging demand signal interface and control the vehicle to enter the fast charging mode through the fast charging demand signal; the main control chip is also used to receive a charging demand signal through the charging demand signal interface and control the vehicle to enter the normal charging mode through the charging demand signal; the main control chip is also used to receive an accelerator pedal signal through the accelerator pedal signal interface and control the vehicle to enter the gear shifting mode through the accelerator pedal signal; the main control chip is also used to receive a gear shifting demand signal through the gear shifting demand signal interface and control the vehicle to enter the gear shifting mode through the gear shifting demand signal; the main control chip is also used to receive a brake pedal signal through the brake pedal signal interface and control the vehicle to brake through the brake pedal signal; the main control chip is also used to receive a crash signal through the crash signal interface and control the vehicle to enter the fault detection and analysis mode through the crash signal; the main control chip is also used to receive a vehicle constant speed cruise signal through the vehicle constant speed cruise signal interface and control the vehicle to enter the uniform motion mode through the vehicle constant speed cruise signal; the main control chip is also used to receive a temperature signal through the temperature signal interface and process and convert the temperature signal for temperature display.

3. The system according to claim 2, wherein The main control chip further includes a high-side drive signal output interface, a low-side drive signal output interface, and a first pulse width modulation signal output interface; The high-side drive signal output interface is used to output a high-side drive signal and control the opening and closing state of the high-side switch; The low-side drive signal output interface is used to output a low-side drive signal and control the opening and closing state of the low-side switch; The first pulse width modulation signal output interface is used to output a modulated single-channel drive signal.

4. The system according to claim 1, characterized in that, The main control chip and the peripheral control chip respectively include SPI communication interfaces, and the main control chip and the peripheral control chip communicate through the SPI communication interfaces.

5. The system according to claim 1, wherein The peripheral control chip further includes a current input interface, a voltage input interface, and a second pulse width modulation signal output interface; The current input interface is used to receive the current of the three-phase lines of the target motor; The voltage input interface is used to receive the voltage of the bus of the target motor; The second pulse width modulation signal output interface is used to output the second signal to enable the target motor to output different torques.

6. A vehicle power domain control method for the vehicle power domain control system according to any one of claims 1 to 5, characterized in that, The method includes: Receiving the first signal through the main control chip, where the first signal includes a vehicle drive control signal; When the first signal is the vehicle drive control signal, calculating, through the main control chip, the motor torque demand value corresponding to the first signal, and collecting, through the peripheral control chip, the motor torque demand value, and generating, based on the motor torque demand value, the second signal, where the second signal is used to control the target motor to output different torques; When the first signal is not the vehicle drive control signal, the main control chip processes the first signal to generate vehicle accessory signals, where the vehicle accessory signals include the high-side drive signal, the low-side drive signal, and the single-channel drive signal; After the main control chip receives the first signal, the method further includes: Determining whether the first signal is a preset verification signal; When the first signal is a preset verification signal, the main control chip and the peripheral control chip respectively process the first signal, and compare the processing results. When the comparison difference value is greater than a preset difference threshold, a verification problem signal is output.

7. The method according to claim 6, wherein Generating the second signal according to the motor torque demand value specifically includes: Obtaining the rotor position signal of the target motor through the resolver decoding chip, and based on the motor torque demand value and the rotor position signal, determining the excitation current and torque current corresponding to the target motor, and then generating the second signal.

8. A storage medium having a computer program stored thereon, characterized in that, The computer program, when executed by a processor, implements the method according to claim 6 or 7.

9. A computer device, comprising a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor, characterized in that, When the processor executes the computer program, it implements the method according to claim 6 or 7.

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